East Penn Manufacturing. Lawn and garden battery

Guaranteed Superior Performance

Because East Penn has built more than 250 quality control checks into the manufacturing process, Outdoorsman batteries guarantee superior performance – every time.

Lawn Garden Batteries:

Learn more about East Penn’s battery selection for lawn garden:

Deka Outdoorsman Batteries

The Outdoorsman battery delivers plenty of cranking amps to power tractors and small-engine recreational vehicles across the roughest terrain.

  • Electrical short prevention system protects power-producing components from life-robbing electrical shorts
  • Vibration-resistant design with reinforced posts, straps, and welds withstand demanding conditions
  • Power-Perform full-framed plates better withstand severe service demands while optimizing current transfer
  • Tough polypropylene case and cover resist external damage from tough outdoor use
  • Side, safety vent system prevents acid leaks up to a 45° tilt, keeping battery dry and corrosion-free

Additional Resources


With over 90 warehouses and distribution centers in North America, East Penn is here to service your delivery and core return needs through one powerful network.

Whether it’s store-door or direct delivery programs, our network of company-owned and operated facilities and premier sales and service staff delivers the industry’s leading logistical support and highest customer satisfaction levels.


East Penn is one of the only battery manufacturers to make all types of flooded, AGM (Absorbed Glass Mat), and Gel technologies. This gives customers a powerful choice and reliable information source for these lead-acid battery products.

We also offer the exclusive UltraBattery and Synergy technologies for partial state-of-charge transportation applications. UltraBattery technology combines the advantages of an Advanced VRLA battery with the advantages of an asymmetric supercapacitor, while our Synergy battery technology offers one of the most cost-effective solutions that is ideal for Micro or Mild HEVs.

Resources Downloads

If you’re unable to find what you’re looking for, please feel free to contact us.



Why are East Penn’s Power-Perform Ⓡ Plates more efficient than other plates? The plate plays a critical role in the performance of the battery’s overall power system. The ability of the plate to store and deliver power is directly proportional to how well it supports the vehicle’s power needs. Power-Perform Plates perform these functions with the highest efficiency enabling more power-per-space and better overall performance. Full-frame structure provides better current transfer from all sides of the plate Enhanced crystallization of the active material and specially formulated oxide optimizes energy storage for high-powered performance Low resistance current path grids with more top frame intersecting wires allow the direct flow of energy for greater starting power Revolutionary paste adhesion techniques deliver better performance over extended use

How do East Penn’s Power-Perform Plates Ⓡ perform better while lasting longer? Power-Perform Plates work within an overall battery life protection system and an advanced durability design to extend performance and service life. Increased grid frame tensile strength resists plate growth to safeguard against life-threatening shorts Thicker backweb and puncture resistant separators prevent plate-to-plate electrical shorts Ultra-pure electrolyte with no impurities inhibits unnecessary water loss Full-frame plate structure prevents exposed wire electrical shorts Advanced battery formation controls prevent high temperature damage and under-formed, low-performance plates Precision craftsmanship, stringent testing, and consistent performance and quality analysis through advanced centralized laboratories ensure that Power-Perform Plates deliver optimized life, power, and durability, even under the most severe service. This means lower warranty claims due to less defects combined with better and longer battery performance.

AGM (Absorbed Glass Mat) TECHNOLOGY

What is AGM? AGM stands for Absorbed Glass Mat

What is an Absorbed Glass Mat? A highly absorbent, micro-porous mat made of special glass fibers. The specially designed mats are an essential component in the battery’s electrolyte suspension system. All of the electrolyte is absorbed into this material enabling a spillproof design.

Why buy an AGM battery from East Penn? East Penn is a pioneer in developing the Form, Fit, and Function of AGM battery technology. The company’s engineering design and manufacturing process meets major US and European OE automotive manufacturers’ standards. From the company’s use of the finest raw materials to precision-focused manufacturing (like the weighing and thickness analysis of every battery group), East Penn’s AGM battery design and process has been tested and proven to best meet the Form, Fit, and Function criteria of the automotive industry.

Are AGM batteries OK for any application? AGM batteries will replace a flooded battery in any typical alternator voltage regulated system. These systems generally maintain a voltage at 13.8 to 14.4 volts (cars, trucks, commercial trucks, boats, etc.). In fact, the efficient recharging of the AGM battery design can cause less wear on the vehicle’s alternator system over time.

Can AGM batteries be recycled like conventional flooded batteries? AGM and conventional flooded lead-acid batteries are one of the most recyclable products on the planet. Lead-acid batteries have a higher recycling rate than glass, aluminum, and newspaper. In fact, virtually 100% of every battery component can be recycled to make a brand new battery. East Penn operates one of the most modern and environmentally-safe facilities in the world. This enables our customers to assure their customers that they are recycling their batteries with someone they can trust.

Is AGM really a premium battery product? Yes. This advanced AGM technological design offers superior performance over conventional flooded batteries. All automotive batteries are expected to meet a certain level of performance standards for engine starting and to provide reserve power for the vehicle’s electronics. AGM batteries, however, are expected to excel in certain key aspects of battery use such as:


As the electrical, high heat, severe service, and durability demands continue to intensify for today’s vehicles, conventional flooded batteries may not deliver the dependable performance and service life needed under these conditions. This is not only the trend for cars and trucks, but now commercial trucks, marine vessels, and power sports vehicles are requiring a more evolved type of battery power.

CYCLING PERFORMANCE Why do customers need better cycling performance from their batteries? Today’s vehicles, and those to come, are being built with more factory-installed electronics and more places to plug in portable devices. For example, cars and other passenger vehicles have to provide power for items like LCD viewers, GPS systems, stereos and speakers, powered Windows or doors, cell and Smart phone charging, and anything else that plugs in or turns on. Boats need power for accessories like live-wells, GPS systems, stereos, hazard lighting, fish finders, and any other item that plugs in or turns on. Cars that utilize stop/start functions, like Micro Hybrid Electric Vehicles, demand extra durability and a better charge acceptance from their battery. As more types of electric vehicles evolve, so will the need for a higher cycling tolerance from the battery.

How do AGM batteries help to deliver better cycling performance? AGM battery technology withstands these additional accessory power and cycling demands while still having the power to start the vehicle. An AGM battery’s enhanced durability and charge acceptance makes it an essential component for many stop/start and other electrical system technology. Its ability to have over twice the cycle life of a conventional flooded design gives it a clear advantage for its implementation into progressing electric vehicle technology.

SEVERE SERVICE DURABILITY Why do customers need better severe service durability from their battery? Severe service and higher temperature conditions continue to escalate because there is less open space under-the-hood with more demand on the battery. Also, more vehicles undergo stop-and-start driving conditions, further increasing the need for enhanced durability.

How do AGM batteries help deliver better severe service durability? AGM battery technology can be utilized to help offset these increasing power and durability demands. The AGM battery’s ability to withstand severe service and accessory power demands under elevated temperatures and stop-and-go conditions will better safeguard performance and extend battery life.

DEEP DISCHARGE RESILIENCY Why do customers need a better deep discharge resiliency from their battery? Vehicles that aren’t used everyday have a higher risk of not starting because of parasitic accessory power loads. Parasitic loads, or even leaving something on when the ignition is off, can completely drain the battery’s power.

How do AGM batteries help deliver better deep discharge resiliency? AGM battery technology delivers a higher deep discharge abuse tolerance. This helps protect the battery longer from situations like infrequent use, parasitic power drains, or other deep power discharge (like leaving your vehicle’s lights on when the ignition is off).

VIBRATION RESISTANCE Why do customers need a battery that resists vibration damage? Vibration resistance is extremely important to protecting the battery’s life in almost any application that moves. Vibration or jolting movements can lead to electrical shorts or the loss of electrical storage capacity that can significantly decrease the battery’s performance.

How do AGM batteries help deliver battery vibration resistance? AGM technology utilizes an Absorbed Glass Mat that protects the battery’s internal components. These special separators serve as a shock absorber to the battery, which buffers vibration or other potentially damaging movement. This added vibration protection is especially ideal for off-road vehicles, watercraft, performance cars, tuner cars, or any other vehicles that undergo intense vibration during normal use.


What is Cycle Life? A CYCLE is a single occurrence when energy is taken out of the battery and then put back in. CYCLE LIFE is the ability of the battery to do that over and over again and continue to deliver reliable performance.

How does claims of extended CYCLE LIFE differ from claims of just extended battery life? LIFE vs. CYCLE LIFE Claims that a battery has extended LIFE could simply mean it survives longer than average in a typical automotive application in an average climate. In the real world, actual battery life is highly variable and unpredictable. The stresses on a battery differ by climate, vehicle differences, and user habits. A battery may last a long time under ideal conditions, but fail with only minimal abuse.

A battery with extended CYCLE LIFE survives longer than average under more grueling demands that portray a more realistic picture of real world use. This includes warmer climates, higher under-hood temperatures, longer than typical hours of usage, higher annual miles of operation, and frequent electrical loads while the engine is off.

Why do customers need better cycling performance from their batteries? Today’s vehicles, and those to come, are being built with more factory-installed electronics and more places to plug in portable devices. For example, cars and other passenger vehicles have to provide power for items like LCD viewers, GPS systems, stereos and speakers, powered Windows or doors, cell and Smart phone charging, and anything else that plugs in or turns on. Boats need power for accessories like live-wells, GPS systems, stereos, hazard lighting, fish finders, and any other item that plugs in or turns on.

Newer cars are also utilizing additional electronic functions in areas that were traditionally powered by the engine. This is not only the case for Hybrid Electic Vehicles, but is also being incorporated throughout a variety of standard automotive designs. These additional electronic services demand extra performance from the battery. As more types of vehicles evolve further into electrification, so will the need for the higher cycling tolerance and overall durability in a battery that can be found in the AGM design.

How does East Penn’s AGM product have extended CYCLE LIFE? East Penn’s AGM batteries have special glass mats that are strategically wrapped around the battery’s power producing components. The main reason for this mat is to absorb all the battery’s acid so the battery won’t leak or spill if turned over or if cracked. However, these mats also provide an added layer of protection for these components. This added protection enhances the battery’s durability against continual power drains like electronics. In fact, East Penn’s AGM batteries have 2x the cycle life over traditional maintenance-free flooded batteries to power more accessories for much longer. This enhanced durability also protects the battery from vibration, high temperatures, the rigors of stop-and-go driving and frequent vehicle use.


What are VRLA batteries? Valve-Regulated Lead-Acid or VRLA, including Gel and AGM (Absorbed Glass Mat) battery designs, can be substituted in virtually any flooded lead-acid battery application (in conjunction with well-regulated charging). Their unique features and benefits deliver an ideal solution for many applications where traditional flooded batteries would not deliver the best results. For almost three decades, East Penn has been manufacturing valve-regulated batteries using tried and true technology backed by more than 65 years experience. East Penn produces a complete line of Gel, AGM, and conventional flooded products for hundreds of applications. This diverse product offering enables East Penn to be objective as to the advantages of each type of battery. East Penn’s VRLA (Gel and AGM) products have the reputation of being the highest quality VRLA batteries available.

How do VRLA batteries work? A VRLA battery utilizes a one-way, pressure-relief valve system to achieve a “recombinant” technology. This means that the oxygen normally produced on the positive plate is absorbed by the negative plate. This suppresses the production of hydrogen at the negative plate. Water (H2O) is produced instead, retaining the moisture within the battery. It never needs watering, and should never be opened as this would expose the battery to excess oxygen from the air. In addition to damaging the battery, opening it also voids the warranty.

What is the difference between VRLA batteries and traditional flooded batteries? Flooded electrolyte batteries do not have special one-way, pressure-relief valves, as they do not work on the recombination principle. Instead, flooded designs utilize a vent to allow gas to escape. They contain liquid electrolyte that can spill and cause corrosion if tipped or punctured. They should not be used near sensitive electronic equipment. They can only be installed “upright.” Flooded batteries lose capacity and become permanently damaged if: Left in a discharged condition for any length of time (due to sulfation). This is especially true of designs that require water maintenance. Continually over-discharged (due to active material shedding). This is especially true of automotive starting types.

What are ideal applications for VRLA batteries?

Deep Cycle, Deep Discharge Applications Marine Trolling Electronics Sailboats Electric Vehicles Wheelchairs/Scooters Golf Cars Portable Power Floor Scrubbers Personnel Carriers Renewable Energy Village Power (Solar, Wind) Marine RV House Power Commercial Deep Cycle Applications

Standby and Emergency Backup Applications UPS (Uninterrupted Power Systems) Cable TV Emergency Lighting Computer Backup Renewable Energy Frequency Regulation (Solar, Wind) Telephone Switching

Other Applications Race or High Performance Cars On-Highway Trucking Off-Road Vehicles Wet Environments Marine RV Starting Diesel Starting Cars and Light Trucks Vehicles with with Accessories Start-Stop Systems

What are Gel and AGM batteries? VRLA technology encompasses both gelled electrolyte or gel batteries and absorbed glass mat or AGM batteries. Both types are regulated by special one-way, pressure-relief valves and have significant advantages over flooded lead-acid products.

AGM (Absorbed Glass Mat) batteries The electrolyte in AGM batteries is completely absorbed in separators consisting of matted glass fibers. This causes them to be spillproof, meaning they don’t leak acid like a flooded design if tipped on their side. The glass mats in AGM batteries are wrapped around the positive plate, which helps prevent damage from vibration and extend cycling. The battery’s groups are packed tightly in the case partitions also protecting its power producing components. AGM battery designs can have over twice the cycle life of a conventional flooded product in the right application.

Gel or Gelled Electrolyte batteries The electrolyte in a Gel battery is permanently locked in a highly viscous gelled state instead of the traditional liquid form. Because there is no liquid-type electrolyte, it will not leak out of the battery if tipped on its side. The thick, gelled electrolyte and tightly packed groups also protect the battery’s power producing components. Gel battery designs have a superior deep discharge resiliency and can deliver over two to three times the cycle life of an AGM product in the right applications.

What are some similarities between Gel and AGM batteries? Batteries utilize special one-way, pressure-relief valves and must never be opened. Requires no electrolyte maintenance unlike deep cycle flooded batteries that require frequent checking and adjustment of electrolyte levels. Uses a recombination reaction to prevent the escape of hydrogen and oxygen gases normally lost in a flooded lead-acid battery (particularly in deep cycle applications). Spillproof design enables installation in virtually any position (upside-down installation is not recommended). Has a higher tolerance against damage from deep discharge. These batteries have optimized amounts of electrolyte (which is also referred to as “acid-starved”) so that they use the power in the acid before they use the power in the plates. This minimizes the destructive nature of ultra-deep discharges. Ultra-deep discharging is what causes plate shedding, which can destroy a battery.

What are the Major differences between Gel and AGM battery performance? A Gel battery is better suited for super-deep discharge applications, which means it can withstand deeper discharges without damaging the battery’s performance. However, due to the physical properties of the gelled electrolyte, Gel battery power declines faster than an AGM battery as the temperature drops below 32ºF (0ºC). AGM batteries excel for high current, high power applications and in extremely cold environments. AGM batteries deliver a better dual purpose solution for a combination of starting and accessory power.

What are the advantages of GEL and AGM battery designs? (waiting on image)

What do I need to know about VRLA battery charging? All lead-acid batteries release hydrogen from the negative plate and oxygen from the positive plate during charging. VRLA batteries have one-way, pressure-relief valves. Without the ability to retain pressure within the cells, hydrogen and oxygen would be lost to the atmosphere, eventually drying out the electrolyte and separators.

Voltage is electrical pressure (energy per unit of charge). Charge (ampere-hours) is a quantity of electricity. Current (amperes) is electrical flow (charging speed). A battery can only store a certain quantity of electricity. The closer it gets to being fully charged, the slower it must be charged. Temperature also affects charging. If the right voltage is used for the temperature, a battery will accept charge at its ideal rate. If too much voltage is used, charge will be forced through the battery faster than it can be stored.

Reactions other than the charging reaction also occur to transport this current through the battery—mainly gassing. Hydrogen and oxygen may be given off faster than the recombination reaction. This raises the pressure until the one-way, pressure-relief valve opens. The gas lost cannot be replaced. Any VRLA battery will dry out and fail prematurely if it experiences excessive overcharging.

Note: It is too much voltage that initiates this problem, not too much charge — a battery can be “over-charged” (damaged by too much voltage) even though it is not fully “charged.” Never install any lead-acid battery in a sealed container or enclosure. Hydrogen gas must be allowed to escape.

Can continual undercharging harm a VRLA battery? In many respects, undercharging is as harmful as overcharging. Keeping a battery in an undercharged condition allows the positive grids to corrode and the plates to shed, dramatically shortening life. Also, an undercharged battery must work harder than a fully charged battery, which contributes to short life as well.

An undercharged battery has a greatly reduced capacity. It may easily be inadvertently over-discharged and eventually damaged.

Do VRLA batteries have a “memory” like Ni-Cad batteries? One of the major disadvantages of nickel-cadmium (Ni-cad) batteries is that after shallow discharge cycles, the unused portions of the electrodes “remember” the previous cycles and are unable to sustain the required discharge voltage beyond the depth of the previous cycles. The capacity is lost and can only be restored by slowly discharging completely (generally outside the application), and properly recharging. VRLA lead-acid batteries do not exhibit this capacity robbing effect known as memory.

What are the safety precautions for VRLA batteries? Although all valve-regulated batteries have the electrolyte immobilized within the cell, the electrical hazard associated with batteries still exists. Work performed on these batteries should be done with the tools and the protective equipment listed below. Valve-regulated battery installations should be supervised by personnel familiar with batteries and battery safety precautions.

Protective Equipment To assure safe battery handling, installation and maintenance, the following protection equipment should be used: Safety glasses or face shield (Consult application specific requirements) Acid-resistant gloves Protective aprons and safety shoes Proper lifting devices Properly insulated tools

Procedures Consult user manual of specific application for safety operating requirements. The following safety procedures should be followed during installation: (Always wear safety glasses or face shield.) 1. These batteries are sealed and contain no free flowing electrolyte. Under normal operating conditions, they do not present any acid danger. However, if the battery jar, case, or cover is damaged, acid could be present. Sulfuric acid is harmful to the skin and eyes. Flush affected area with water immediately and consult a physician if splashed in the eyes. Consult MSDS for additional precautions and first aid measures. 2. Prohibit smoking and open flames, and avoid arcing in the immediate vicinity of the battery. 3. Do not wear metallic objects, such as jewelry, while working on batteries. Do not store un-insulated tools in s or tool belt while working in vicinity of battery. 4. Keep the top of the battery dry and clear of all tools and other foreign objects. 5. Provide adequate ventilation as regulated by Federal, State and Local codes and follow recommended charging voltages. 6. Extinguishing media: Class ABC extinguisher. Note: CO2 may be used but not directly on the cells due to thermal shock and potential cracking of cases. 7. Never remove or tamper with pressure-relief valves. Warranty void if vent valve is removed.

Can VRLA batteries be installed in sealed battery boxes? NO! Never install any type of battery in a completely sealed container. Although most of the normal gasses (oxygen and hydrogen) produced in a VRLA battery will be recombined and not escape, oxygen and hydrogen will escape from the battery in an overcharge condition (as is typical of any type battery).

These potentially explosive gasses must be allowed to vent to the atmosphere and must never be trapped in a sealed battery box or tightly enclosed space!

Does depth of discharge affect cycle life? Yes! The harder any battery has to work, the sooner it will fail.

The shallower the average discharge, the longer the life. It’s important to size a battery system to deliver at least twice the energy required, to assure shallow discharges.

Follow these tips for the longest life: Avoid ultra-deep discharges. The definition of ultra-deep discharge may vary with application and battery type. Don’t leave a battery at a low stage of charge for an extended length of time. Charge a discharged battery as soon as possible. Don’t cycle a battery at a low state of charge without regularly recharging fully. Use the highest initial charging current available (up to 30% of the 20-hour capacity per hour) while staying within the proper temperature-compensated voltage range.

What is a thermal runaway? The appropriate charge voltage depends on the battery temperatures. A warmer battery requires a reduced voltage. If the voltage is not reduced, current accepted by the battery increases. When the current increases, the internal heating increases. This can rise to destructive levels if not taken into consideration.

Thermal runaway can be prevented with: Temperature compensation monitoring at the battery —not at the charger. Limiting charging currents to appropriate levels. Allowing for adequate air circulation around the batteries. Using timers or ampere-hour counters. Using Smart chargers that recognize the signature of a thermal runaway event which will shut the charger down.

How To Restore a Lawn Mower Battery: A Step by Step Guide

How to restore a lawn mower battery after it starts showing trouble is a common question among avid gardeners. Sometimes, all a mower battery needs are to be taken out, cleaned properly, and recharged fully.

east, penn, manufacturing, lawn, garden

In this guide, we will discuss in great detail all the steps needed to fix a battery at home, so why take the battery to a mechanic and spend extra money when you can restore it at home? Let’s find out all the easy steps in the guide below.

  • How Do You Restore Lawn Mower Batteries?
  • 1. Get Your Equipment Ready
  • 2. Remove the Battery From the Mower
  • 3. Remove Caps From the Cells
  • 4. Drain the Old Electrolyte Out
  • 5. Remove Corrosion From the Battery
  • 6. Clean the Battery Thoroughly
  • 7. Make Epsom Salt and Distilled Water Electrolyte
  • 8. Fill Battery Cells With the Electrolyte
  • 9. Charge The Battery Fully
  • 10. Place the Battery Back Into the Mower
  • 11. Start the Engine

How Do You Restore Lawn Mower Batteries?

To restore lawn mower batteries, you must first take them out of the mower and drain their charging fluid. After this, the battery needs to be cleaned and the fluid should be refilled. The battery should then be charged again in order to work properly.

Let us go through all the steps of this restoration in detail below.

Get Your Equipment Ready

The most important items on your list need to be personal protective equipment. These include thick rubber gloves, clothing that covers the whole body, and protective eyewear.

If you have yet to buy an automatic, voltage-regulated battery charger, it is high time you spend some money on it. This charger might solely be responsible for damaging the battery in the first place.

Next, you will need a lot of distilled water. We are talking about gallons here. Buy a couple of bags of baking soda and Epsom salt as well. Buy a dropper and a funnel to pour electrolytes into the battery.

Remove the Battery From the Mower

Lawn mower batteries are in two common locations, either under the hood or under the driving seats of riding-type mowers. In a riding lawn mower, you will have to pull the seat up to gain access to the battery. If your mower is a bit unique and needs help finding its battery, go through its instructions manual to find out where it is.

Before gaining access to the battery, turn the ignition off and take the key out. It is also better to disengage the spark plug to decrease the risk of accidentally starting the engine. Locate and then remove all latches or straps holding the battery down in its place.

When taking the battery out, start by removing its ground wire first. This is going to be the lone black wire in most cases. Then remove the negative terminal of the battery followed by the positive terminal. The negative terminal is usually the black one with the negative sign, while the positive terminal is the red one with the positive symbol etched on it.

Do not pull the cables off by force; instead, carefully loosen them up. If the intervals and the cables seem stuck, use a flathead screwdriver to loosen the connectors apart. Be careful when taking the battery out, and see if you can get someone to help you.

Remove Caps From the Cells

On top of the battery, several cells contain electrolyte fluid within them. You will easily be able to see them once you take the battery out. These cells are covered by caps that need to be removed as the first step.

east, penn, manufacturing, lawn, garden

You will need a flat-headed screwdriver because caps are not so easily loosened. Be careful during this process because it’s easy to spill the corrosive electrolyte out during cap removal. Ensure your skin, especially your hands, is covered by thick rubber gloves and full-sleeved clothing.

Sometimes, the caps do not come loose because of severe corrosion on their metal parts. In that case, you should remove the corrosion first by using a baking soda and water mixture. Apply this mixture to the affected parts and scrub the corrosion using a toothbrush. You will see how easily the cap unscrews after this.

Drain the Old Electrolyte Out

After the cell caps have been removed, it is time to remove the old electrolyte. Exercise caution to prevent spillage while you are at it, and better use a dropper and a syringe to stay on the safe side. This fluid is toxic and corrosive to the skin, so ensure you are well-covered and protected.

Collect the drained fluid from the battery in a proper metal or plastic container. You cannot just drop this container of fluid into regular garbage. This is considered hazardous waste, and you need to read up on local laws regarding getting rid of it. Ask your municipal garbage disposal company if they accept waste of this kind.

Remove Corrosion From the Battery

Over time, some inevitable sulfate from the electrolytic fluid builds up within battery cells. This build-up plays a huge role in decreasing the life span of mower batteries. Cleaning each cell inside and out is crucial in restoring a problematic battery.

The outside can be easily cleaned using only a wet towel unless proper corrosion exists. Corrosion will most likely be present around the battery terminals. There are two vetted ways to get rid of corrosion build-up fast.

The first method is to buy a corrosion-cleaning solution from the store. Pour a few drops of this solution on a paper towel or sponge, then use it to wipe the corrosion off. A premium-quality solution will remove corrosion without much effort on your part.

The second option is to use sandpaper to scrape the green-colored corrosion products off the battery. The sandpaper grit should be around 300 to 400 to make this task easier for you. Don’t use sandpaper with bare hands, or you will get scratches on both hands.

Clean the Battery Thoroughly

A homemade baking soda and distilled water solution is more effective at cleaning the mower battery than any commercial cleaner. If you want to, you can also use commercial cleaners, which are usually expensive and less effective.

Take a clean bucket and fill it with one gallon of pure distilled water. Salt or fresh water is not recommended because it leaves the battery’s salt and mineral residue behind. Using the dropper or the funnel, pour this solution into each cell and put the caps back on.

east, penn, manufacturing, lawn, garden

Refrain from filling the cells to the brim; leave some space empty at the top. Shake the battery gently for about one to two minutes. This would help the solution clean the insides of battery cells as thoroughly as needed. Allow an extra one to two minutes before draining the cleaning solution out.

To drain the cleaning solution from the battery, invert it into a plastic tub or container. You should not use this dirty water on plants or grass; instead, responsibly dispose of it according to your local laws.

Make Epsom Salt and Distilled Water Electrolyte

The next step is to make your DIY electrolyte using magnesium sulfate and distilled water. Magnesium sulfate is usually sold under its common name, Epsom salt. Using any other water except distilled water is a mistake that will destroy the battery.

Take as much as a gallon of distilled water and add about 15 ounces of Epsom salt. Warm the water a little before adding salt, mixing it thoroughly to create a perfectly saturated solution. You now have a perfectly balanced homemade electrolyte solution for lawn mower batteries.

Fill Battery Cells With the Electrolyte

Use a clean dropper to fill each cell with your newly made electrolyte solution. Each cell is marked with a line that indicates how much it needs to be filled. Keep a close eye on this line, so you don’t end up overfilling or underfilling the cells.

east, penn, manufacturing, lawn, garden

The temperature of the electrolyte solution needs to be around 60 to 80 degrees Fahrenheit. If the solution has been kept at colder temperatures, bring it to room temperature before pouring it into the cells. There is no need to heat it; leave it in a temperature-maintained room for an hour or so until it reaches the right temperature.

Once the cells have been filled up to the line drawn, you must put their caps back on. However, don’t screw them up too tightly just now as a precaution against overflow during charging.

Charge The Battery Fully

Your charger choice matters a lot when restoring a lawn mower battery. Be bold in investing enough money into buying a good-quality automatic battery charger with a voltage regulator. The charger must also be adjustable to set its charging time according to your liking.

Set the charger to the trickle charge option, which charges your battery slowly. At the rate of two amperes charge per hour, give your battery at least 24 hours to charge fully. Don’t worry if this seems like a long time for the battery to charge fully because this is quite good for the life of the battery.

An automatic charger would turn off when the battery’s charge becomes full. This is good because nothing kills a battery more than overcharging. If you are still working with an old-style charger with no voltage regulator, then be vigilant to turn it off as soon as charging is complete.

Place the Battery Back Into the Mower

After you have fully charged your battery and everything seems to be fine, then screw the caps of the electrolyte cells tightly. Once again, have a thorough look at your battery to make sure that everything is fine. There should be no bulging of the sides, no fluids leaking from anywhere, or any cracks and creaks.

east, penn, manufacturing, lawn, garden

When satisfied, lift the battery and place it within the mower exactly as you had taken it out. Carefully reconnect all the wires that you disconnected earlier. While reconnecting, the positive terminal must be attached before the negative terminal. After fully connecting the battery, secure it with screws and straps so it does not jolt around while the mower is working.

Start the Engine

Now that the newly cleaned, refilled, and a charged battery is back where it belongs, let’s see if it will work. Connect the spark plug back to the mower that you had disengaged earlier. Push the start button of the engine to get it running.

If the battery has been restored fully, the engine will start immediately without making any sounds. The mower will run smoothly without any hiccups, and there will be no signs of trouble like gasses being produced or jerky engine movements.


Before concluding this detailed guide on battery restoration, here are some key take-home points we must reiterate.

  • Find out where the battery is located within your mower and take it out after disconnecting its terminals.
  • The cells on the top of the mower need to be drained of the fluid in them. Make sure you are wearing the thickest gloves you can find because this fluid can cause severe burns.
  • Before refilling the cells with fresh electrolytes, wash them with a commercial battery cleaning solution or a homemade baking soda solution first.

So far, you have learned how easy it is to restore a battery that has been giving you trouble but has not completely gone bad. Follow all the steps given above while taking care of your safety to make your battery healthy again.

After a couple of weeks and three cuts, I’m sold on DeWALT’s cordless, brushless, battery-powered lawn mower.

By Mark Wolfe | Updated May 18, 2023 1:42 PM

We may earn revenue from the products available on this page and participate in affiliate programs.

east, penn, manufacturing, lawn, garden

When did DeWALT start making lawn mowers? As manufacturers pour resources into building the best battery-powered lawn mowers, shoppers have a wealth of options, and they’re not just coming from the traditional brands. In addition to time-tested lawn-mower companies like Toro, Snapper, and Craftsman, we’ve seen the relatively recent rise of newcomers like Greenworks and Ego. One interesting subset of battery-mower makers are the businesses known for their cordless hand tools. Suddenly drill and saw brands such as Milwaukee, Makita, and DeWALT are making lawn mowers and leaf blowers. It actually makes a lot of sense.

In the early 1990s, DeWALT was the first company to list a full line of contractor-grade cordless hand tools. The offering was a massive success, earning the company a loyal customer base that continues to grow. Continuing innovation is the key, as it was one of the first companies to upgrade from nickel-cadmium to high-efficiency lithium-ion batteries, and it constantly rolls out new features for improved ergonomics and overall performance. With DeWALT’s battery and motor expertise in-house, along with a strong culture of innovation, it makes sense that the company would easily move into battery-powered lawn equipment. This spring I finally got the chance to give one of its mowers a try.

I recently tested the DeWALT 2X20V MAX 21.5-inch self-propelled lawn mower for a couple of weeks on my own lawn. After trying out dozens of lawn mowers for previous articles, I approached the DeWALT project with certain expectations regarding overall mowing performance, battery runtime, user comfort, and convenience. In short, this mower did a great job for me, outperforming many of my expectations. Read on to learn more about the DeWALT cordless lawn mower and why I recommend it as a top pick for anyone who might be shopping for a cordless mower right now.

DeWALT 2X20V MAX 21.5-Inch Self-Propelled Lawn Mower: At a Glance

Rating: 8.3/10


  • Heavy-duty steel mower deck with 3-way grass-clipping management
  • Front-wheel drive self-propel system supports safe operation and smooth turns
  • Powered by 2 rechargeable DeWALT XR 20-volt (V) lithium-ion batteries
  • 2-stage brushless motor preserves battery life and automatically increases power for tougher mowing conditions
  • Ergonomic cushioned hand grip reduces operator fatigue


  • Heavy and cumbersome to maneuver manually without the self-propel feature engaged
  • Takes a long time to recharge the batteries with the included DCB107 battery chargers
  • The mower’s battery compartment has an awkward design

Get the DeWALT lawn mower at:

What is the DeWALT 2X20V MAX 21.5-inch self-propelled lawn mower?

The DeWALT DCMWSP244U2 is a 3-in-1 cordless electric mower with a 21.5-inch,15-gauge stamped-steel deck and a high-output brushless motor. It features a push-button start, a padded handle, and ergonomic controls. The mower is powered by two 20V 10 amp-hour (Ah) lithium-ion batteries for a total of 40 volts of power and 400 watt-hours, and it comes with two battery chargers.

The motor is equipped with auto-sensing tech that seamlessly increases torque when encountering tougher mowing conditions. A removable discharge chute, grass catcher, and integrated mulch plug allow for quick conversion to your preferred method of grass-clipping disposal. Adjustable front-wheel-drive (FWD) self-propulsion eliminates half the work of mowing, lets you choose your own pace, and works on all kinds of terrain. The deck can be adjusted to six different cutting heights from 1.5 to 4 inches. With up to 60 minutes of runtime per charge, this mower is ideal for properties up to a half acre.

How easy is the DeWALT lawn mower to assemble?

Upon its arrival, the first order of business was to assemble the mower and charge the batteries. At just under 80 pounds in the box (about 65 pounds fully assembled, with no batteries installed), it was a bit cumbersome to lug into the workshop and unpack, but assembly itself was a cinch.

I raised the lower section of the handle to the operating position, attached the upper handle to the lower handle with two large thumb screws, and clipped the power cord into the handle slot. That was it. The blade was preinstalled at the factory. Next, I plugged in the chargers and loaded the batteries to charge overnight. Total unboxing and assembly time was about 5 minutes, and charging time was about 8 hours.

east, penn, manufacturing, lawn, garden

How easy is the DeWALT lawn mower to use?

This mower runs on two batteries at the same time. One head-scratching moment occurred when I loaded the batteries in the mower. The battery compartment is oriented horizontally with the battery mounts beneath the top. I couldn’t actually see the contacts at the back unless I knelt and bent down to look inside. This was not a big problem, just awkward to align the batteries into the slots. But because the “fuel”-gauge feature on the XR battery happens to be on the contact end, it is concealed inside the mower housing when installed. In order to check the battery level, I would have to remove the battery. The only thing I didn’t like was the slow charging system, but an upgrade to the DeWALT DCB118 fast charger could reduce the 8-hour recharge time to just 1 hour.

Starting and controlling the DeWALT cordless mower was similar to the process for other mowers I’ve tested. A security key, inserted below the start button on the handle, unlocked the mower so that it would start. I pressed and held the start button, then pulled the wire lever down to the padded hand grip. This started the motor and blade. To start the self-propel system, I could squeeze one or both of the levers angling downward from the hand grip.

How well does the DeWALT lawn mower work?

I set up the test area in my yard, with about 10,000 square feet of lawn that included some short but steep slopes, weedy spots, and dense grass. I mowed the test plot with the DeWALT cordless mower three times, and it required just over two full battery charges each time. It mowed about 5,000 square feet per charge when adjusted to 2.5 inches high with the grass catcher in place. At 3.5 inches that extended to about 8,000 square feet. I got an additional few hundred square feet per charge by removing the bag and using the side-discharge and mulching options.

The DeWALT electric mower is a great choice for small and medium-size yards. The advertised 60-minute runtime per charge might hold up in some circumstances—see the manufacturer’s fine print—but I got more like 40 minutes, which, as noted, was good for up to about 8,000 square feet of lawn space. That should be plenty for anyone with a quarter-acre lot and most half-acre lots when the house, driveway, landscape beds, and other non-grass areas are removed from the equation.

east, penn, manufacturing, lawn, garden

Is the DeWALT lawn mower good quality?

In addition to the heavy-duty steel deck, a few key features pointed to higher-than-average quality and thoughtful design. For one thing, the integrated mulch plug, which is built into the bagger hatch, simply and effectively eliminates the need to keep track of an easy-to-lose part. For another, the FWD self-propel configuration drives quite well across all kinds of terrain and makes turning easier than with rear-wheel drive. Plus, the added forward weight of this configuration counterbalances the weight of the bag even when it’s full.

At the controls, everything was well laid out for easy operation, and the cushioned handle felt comfortable while I was mowing. Also, this mower is a space saver. With its fold-flat handle and vertical storage capability, it only needs about 2.5 square feet of storage floor space.

Is the DeWALT 2X20V 21.5-inch cordless brushless lawn mower worth the money?

At about 600, the DeWALT electric mower costs about twice as much as the cheapest self-propelled gas mowers. But it’s about the same price as higher-quality gas mowers and comparably equipped battery-powered mowers. So it’s at least a fair value if we stop there.

In my tests of other battery mowers at similar prices, I can say that this one offers a combination of features that others do not. DeWALT gets all of the basics right: Mowing power, operational comfort, battery life, and overall functionality are all at least as good as anything else out there. The steel deck is as stout as any I’ve tested, and better than most. The FWD self-propel system is a rarity among battery mowers, and it’s a nice touch. Altogether the base quality and thoughtful features make it a value purchase within the 600 range.

east, penn, manufacturing, lawn, garden

Is the DeWALT 2X20V MAX 21.5-inch self-propelled lawn mower right for you?

Battery-powered lawn mowers run quietly, keep the air cleaner, and eliminate the need to transport and store gasoline. Over the past couple of decades, battery technology and electric- motor efficiency have advanced, and have come down to approachable levels for many customers. DeWALT has leveraged its position as a leader and innovator of cordless tools to introduce this electric lawn mower.

This mower is easy and comfortable to operate on all kinds of terrain, eliminates all of the downsides of maintaining a gas engine, and delivers a nice, even cut. The price is in line with the competition, and the quality appears to be better than most. Overall, I’d say it’s a solid choice for anyone maintaining up to about 5,000 square feet of lawn, or roughly a quarter- to half-acre lot.

Where to Buy the DeWALT 2X20V MAX 21.5-Inch Self-Propelled Lawn Mower

Get the DeWALT lawn mower at:

Meet the Tester

Mark Wolfe is a writer and product tester with an extensive background in the nursery and landscaping industry. For more than 20 years he mowed, edged, planted, pruned, cultivated, irrigated, and renovated beautiful landscapes for home and business owners. Now he tests and writes reviews about the latest outdoor power equipment, hand tools, lawn-care products, and other outdoor-living goods.

Spring Battery Maintenance Guide

Prepare for Spring with Schumacher – As winter gives way to spring, it’s time to start paying attention to your lawn and garden once again. Prepare for Spring with Schumacher – As winter gives way to spring, it’s time to start paying attention to your lawn and garden once again. Before you start your springtime […]

Prepare for Spring with Schumacher – As winter gives way to spring, it’s time to start paying attention to your lawn and garden once again.

Prepare for Spring with Schumacher – As winter gives way to spring, it’s time to start paying attention to your lawn and garden once again. Before you start your springtime outdoor chores, it’s best to make sure that your equipment is in working order and ready to tackle all the garden tasks on your list.

Schumacher can help you get the best out of your lawn and garden, whether you are tending a lawn that’s the envy of your neighbors or planting a vegetable garden. We can help you charge and maintain your riding lawn mower’s battery or power grow lights in your greenhouse.

Maintain Your Lawn Mower’s Battery

Spring is the time of year when your lawn will emerge from its winter dormancy. As it begins to grow, make sure your lawn tractor is ready to work. While lawnmowers are essential for anyone with a yard, most of us will leave ours unused for months of the year. This risks a dead battery.

When should you charge your lawn tractor’s battery? Schumacher recommends charging the battery before storing the lawn tractor for the winter, before starting it for the first time in the spring, and before starting if it has sat unused for an extended period.

Schumacher has a wide range of battery chargers and maintainers uniquely suited to prevent or remedy a dead battery.

The Schumacher SC1586 1A 6V/12V Battery Charger and Maintainer

Is designed especially for motorcycles, lawn tractors, and other light-duty batteries. It offers fully automatic charging—simply plug in and go—and is compatible with most battery types, including lithium. Once a connected battery is fully charged, it will automatically maintain that charge and preserve battery health.

The Schumacher SC1588 2A 6V/12V Battery Charger and Maintainer

Has a bit more power than the SC1586. In addition to light-duty batteries, it is strong enough to charge power sport, car, and boat batteries. It also offers fully automatic operation, and it is compatible with standard, AGM, gel, and deep-cycle batteries. For added convenience, the SC1588 features a quick-connect harness that allows you to connect the battery to the charger in seconds. The perfect edition to your spring battery maintenance toolbox.

If you have multiple batteries to charge and maintain, you might consider the Schumacher SC1410 2A 6V/12V Two-Bank Battery Charger and Maintainer

This charger allows you to charge or maintain two batteries at the same time with a 2 amps of output per bank. Fully automatic operation means it’s easy to use and it offers both clamps and ring terminals, giving you two ways to connect your batteries. This unit can be mounted permanently to a wall in your garage or you can use the hook to hang the charger outside your work area. It is compatible with standard, AGM, and gel batteries.

No matter which you choose, having a Schumacher battery charger and maintainer on hand will ensure your lawn equipment is in top shape and ready for whatever the season brings.

Give Your Vegetables a Boost

You’ve probably heard the phrase, “There aren’t enough hours in the day.” Well, sometimes your plants feel the same way. While springtime sees our days get longer, some gardeners like to give their seedlings and other plants a boost with a few extra hours of sunlight. If you’re lucky enough to have a greenhouse, it is easy to supplement the hours of natural light you’re given with grow lights, which are an economical and easy-to-implement solution. Greenhouse owners can also use grow lights to remedy uneven lighting, banishing the dark corners that are present even in these light-filled structures.

But what do you do if your greenhouse lacks AC power to run your grow lights? Traditional gas generators can supply power, but because they emit carbon monoxide, they are dangerous to use inside any type of structure. The fumes emitted by a gas generator can kill a person and your plants won’t appreciate the fumes either. Even if placed outside your greenhouse, gas generators can still be a nuisance. They are quite loud, spoiling the serenity of your garden.

Schumacher has the solution for safely powering your greenhouse—a lithium-powered generator. Schumacher’s lithium generators provide portable power on demand and because they are fume- and fuel-free they are safe to use indoors and operate silently.

The Schumacher SL1467 880 Wh Lithium Generator

Is an excellent choice for providing power to your greenhouse or portable power anywhere in your garden. In addition to grow lights, you can use the SL1467 to run a wide variety of electric devices, including fans, TVs, speakers, smartphones, and laptops. A built-in 1000W pure sine wave inverter means you can safely operate even sophisticated electronic appliances from your SL1467 lithium generator. With 880 Wh available, the SL1467 will run up to 35 hours on a single charge and it can be fully recharged in only 10.5 hours. You’ll also have numerous output options with a Schumacher lithium generator. The SL1467 features two household 120V AC outlets, four USB ports, two 12V DC output ports, and a 12V DC accessory socket.

Enjoy the Season

With a little preparation and some help from a few Schumacher products, you’re ready to enjoy the spring season without worry. Schumacher is dedicated to helping you get the most out of your lawn and garden equipment and ensuring it remains in top condition for many years to come.

When to Replace Your Lawn Mower Battery: 4 Signs It’s Time

Like any other piece of machinery, lawn mower batteries have a lifespan. Your lawn mower’s battery can lose its charge when stored during winter months or not used for long periods. Knowing when to replace your lawn mower battery can help you avoid a breakdown in the middle of cutting the lawn.

Here are helpful tips for identifying if you need a new lawnmower battery :

Check the connections of your lawnmower. Notice that your lawnmower isn’t cutting as smoothly or holding its charge for long periods. It’s possible that there’s an issue with the battery. Batteries deal with vibrations. It can lead them down an inevitable path. Rapid decline in power source due to excessive shaking from unexpected events like storms, etc., which makes it essential to check often and make sure everything is tight. To ensure that your lawnmower is running smoothly and efficiently, it’s essential to check the connections at each terminal. Check for any stray wires. Try Charging the lawnmower. If you’re unsure if your lawnmower battery is dead or needs some juice, connect it to a charger. Most chargers have 12 volts as their standard voltage and will keep consumers safe from any shock. It is always crucial that you charge your battery for at least eight hours before use. It will ensure the maximum amount of power can be absorbed by each cell and helps reduce any chance when it comes time to replace them. Listen for a Clicking Sound coming from your lawnmower. When you pull the cord or turn on the key in the ignition, if it makes clicking sounds, replacement batteries might be necessary due to lack of power from the charger pack and reduced capacity. Keeping your lawnmower battery healthy is vital for its lifetime and performance. It’s best to place it on a trickle charge when not using the equipment, such as over the winter months. Verify the Voltage. A multimeter will allow you to test your lawn mower’s electrical system quickly if there are any doubts about whether or not the charger works. Check the Water Reservoir. Lawnmower batteries are usually designed with a flooded design that requires you to add water. Check your battery by accessing the reservoir, and make sure it’s at its maximum level before using it again.

Why it’s essential to keep your lawnmower’s regular maintenance?

If you take care of your lawnmower, it will last longer and operate more efficiently. Lawn machines are built with advanced technology that makes them strong enough to handle years’ worth of use without breaking down in between cuts. But as is always true for any piece o equipment being constantly utilized over time. It’s essential to keep up with lawnmower maintenance. It means keeping the blades sharpened and free of debris, cleaning out the underside of the deck, and removing any clippings that have built up over time. It also means checking the oil levels regularly and adding oil when necessary—and topping off or replacing the gas tank before each use. These simple tasks will help your lawnmower run like new for years to come. And save you from the hassle and cost of unexpected repairs. It’s also essential to store lawnmowers in a dry area, out of direct sunlight, when they’re not in use. It will protect the battery and other components from deterioration.

For any lawnmower battery issues and other outdoor equipment needs, contact Ogden Lawn and Garden.

Lawnmowers are vital equipment to keep your lawn and garden looking its best. Proper maintenance and a functioning battery make them more efficient in doing the job. At Oden Lawn and Garden, we have a wide variety of lawn mowers, trimmers, edgers, and other outdoor equipment to help make your lawn look its best. Ogden Lawn and Garden also offers a complete line of lawn mower parts and accessories to keep your equipment running like new. Whether you need a new lawnmower battery or repair services, Ogden Lawn and Garden is here to help. We also offer free lawn care tips to keep your lawn looking great. For any lawnmower battery issues and other outdoor equipment needs, contact Ogden Lawn and Garden at 801-394-5511 or visit our website!

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