Duralast vs. Diehard Batteries – Comparison Guide
Car batteries are one of the most essential yet puzzling features of vehicles. If you seek a new battery for your auto, you can be overwhelmed by the myriad options available. Several manufacturers provide car batteries, but Duralast and Diehard batteries stand out for their remarkable reliability.
So, which of the two batteries is well-fitting for your vehicle? Read on to learn all you need about these two popular battery brands.
Are Duralast and Diehard Batteries the Same?
The same company manufactures Diehard and Duralast batteries, but there are various variations between the two brands.
The primary distinctive feature of Diehard batteries is they last longer than other battery brands, while Duralast batteries are known for their excellent performance. Nevertheless, the two brands offer similar specs and features, so most buyers typically confuse them.
Duralast Batteries Overview
Duralast batteries are among the most popular battery brands globally and can be found at AutoZone Stores. The model is available in three mundane model options: regular, gold, and premium. Duralast Regular is the entry-level battery model by the brand, typically classified as a starter battery.
The battery produces power to start the engine and recharges as it runs. This model is well-recommended if your auto has no fancy features or extras.
Conversely, Duralast Gold batteries come with extra lead plates than the base model, offering superior functionality and performance. This battery variation is ideal if you drive in extreme temperature conditions and is an excellent fit for vehicles with high power requirements, like heated seats.
The Platinum variation boasts the Absorbent Glass Mat (AGM) technology, producing more power. The Duralast Platinum battery most suits off-roaders and autos with many electrical accessories.
Diehard Batteries Overview
Diehard is a reputable brand that offers a wide selection of reliable batteries. Diehard batteries are available in five models built using cutting-edge technology to match the power requirements of various vehicles.
These battery variations include:
- Diehard Red
- Diehard Silver
- Diehard Gold
- Diehard Platinum
- Diehard Platinum AGM
The entry-level model, RED, is typically utilized for ignition, while the Diehard Silver iteration can also power up a few accessories besides reliable ignition in all seasons.
On the other hand, Diehard Gold batteries guarantee superior performance, offering powerful ignition in all climate seasons. The Platinum variation provides more reliability and performance than its preceding siblings, with significantly higher output to power mid-range accessories.
The Platinum AGM marks the pinnacle of Diehard batteries, handling high-demand extras on power-hungry vehicles.
Duralast Battery vs. Diehard Battery Comparison
Let’s look at a detailed comparison of Duralast and Diehard batteries.
Who Makes Duralast and Diehard Batteries?
Duralast has been around for decades, with a rich heritage dating back to 1885, when its initial manufacturer, Johnson Controls International, was founded.
In 2019, Brookfield Business Partners acquired Johnson Controls and established Clarios LLC, the current manufacturer of Duralast batteries. AutoZone Stores exclusively distribute these batteries.
Similarly, Clarios LLC manufactures Diehard batteries, a brand that has existed since 1967. Sears Roebuck Company previously owned Diehard, with batteries produced by Globe-Union Battery.
Later on, Johnson Controls obtained Globe-Union Battery and manufactured the Diehard batteries. In 2019, the company sold its battery operations to the present producer, Clarios LLC.
Duralast vs. Diehard Battery Type and Technology
Both Diehard and Duralast batteries are available in two types; AGM batteries and Flooded Lead-Acid Batteries.
The latter type is commonly found on older car models and contains liquid electrolyte that sparks chemical reactions to power the engine. The chemical properties mush freely around in Lead-Acid batteries. While both brands offer flooded lead-acid batteries, Diehard options offer somewhat more performance than Duralast.
AGM batteries retain the flooded lead-acid battery concept, but the chemical properties are contained within fiberglass mats. This battery type is prevalent on newer car models, featuring easier led management and more efficient power delivery.
Duralast reigns supreme in this battery type, offering better longevity and performance than Diehard AGM batteries.
Duralast vs. Diehard RC Rating
Reserve capacity (RC) rating indicates the time (in minutes) a fully charged car battery can produce 25 amps at 80°F before dropping below its minimum voltage. This rating shows how efficiently a battery can release energy over time while remaining free of the car’s charging mechanism.
The higher the RC rating, the longer the car battery will deliver power. Both Duralast and Diehard offer different battery models with varying RC ratings.
Duralast vs. Diehard Cold Cranking Power
A car battery’s cold-cranking amps (CCA) score indicates its capacity to power up the engine in a cold environment.
This rating describes the amount of power in amps the car battery can produce and sustain in 30 seconds at 0°F. Car batteries typically slow down during cold weather, but you can remedy the situation by getting a battery with efficient CCA.
Duralast and Diehard provide superior battery models with high CCA output. As a result, batteries by Duralast offer excellent ACC ratings, scoring between 700A and 800A. Conversely, Diehard batteries give the highest ACC score, ranging from 550A to 900A.
Duralast vs. Diehard Operating Temperature Range
Diehard and Duralast batteries generally offer wide operating temperature ranges, from as low as 40°F to 110°F. The operation temperature range varies with the battery type and model.
Duralast Gold and Diehard Platinum provide the highest operating temperature ranges and can work efficiently in adverse temperatures.
Duralast vs. Diehard Ease of Maintenance
Duralast and Diehard batteries are easy to maintain. All you need is to adhere to the simple maintenance instructions you would find on other automobile batteries.
Also, both brands offer maintenance-free models, including Duralast Gold and Diehard Platinum AGM, saving you the hassles and costs associated with battery maintenance.
Duralast vs. Diehard Durability comparison
Both brands provide impressive battery durability. Diehard batteries feature a three to five years lifespan in ideal conditions. However, this lifespan will vary depending on various factors such as temperature, charging system type, maintenance, and driving frequency.
Similarly, Duralast batteries averagely last between three to five years, with the longevity varying with the model. Duralast Platinum batteries offer a longer lifespan, which explains their fairly high price.
It is important to note that the longevity of car batteries will differ in the long run depending on the maintenance and usage, regardless of the brand you buy.
Duralast vs. Diehard Warranty and Replacement
Warranties in car batteries cover free replacement and prorate replacement durations. Even with regular proper maintenance practices, your car battery will still need replacements at some point. A warranty ensures peace of mind whenever you are behind the wheel.
Both brands offer lucrative warranty coverage, with Duralast offering two years of warranty coverage while Diehard comes with a three-year warranty. So, Diehard tops this segment with a more extended warranty period.
However, learning about the breach rules is vital to avoid issues and keep your battery purchase covered regardless of the brand.
Duralast vs. Diehard Price
Duralast and Diehard batteries fall within the same price range. Typically, the battery pricing varies with the size, model, and additional features. In this situation, both battery brands provide similar pricing with a few variations.
Duralast vs. Diehard Batteries Pros and Cons Table Summary
|Duralast Battery||Diehard Battery|
|Most parts are maintenance-free||Some models come with a relatively higher discharge rate, shortening the lifespan||Longer life span||Some models are relatively costly|
|Wide range of use fitting various vehicle needs||Some models lack a handle, making handling and carrying difficult||Better CCA scores||Some models aren’t efficient in extreme cold weather conditions|
|Offers a durable solid build||Some models are relatively expensive||Reliable and dependable||Some models are difficult to install|
|Reliable and dependable||Offers excellent value for money|
|Relatively high reserve capacity||Superior starting performance|
Is Duralast or Diehard Better?
Duralast and Diehard batteries have a lot in common, from the same manufacturer to quality. Both brands are equally good and excellent for various cars. The better choice between Duralast and Diehard narrows to specific factors.
For instance, a flooded lead-acid battery is well-recommended if you drive an older car. In such a case, Diehard Gold and Duralast Platinum are suitable choices. AGM batteries are ideal for new autos with modern accessories and specs. Diehard AGM batteries are better suited for more recent vehicles.
Where To Buy Duralast and Diehard Batteries
Diehard batteries are available at all Advance Auto Parts stores around the world. To find the nearest store, visit the Advanced Auto Parts website, select your preferred battery or product, and search for a store selling it near you.
Alternatively, you can buy Diehard batteries and related products online and opt for the Advance Auto Parts home shipping option at an extra fee.
You can also find Diehard batteries and related products at Kmart, Sears.com, and Sears Hometown Stores.
On the other hand, Duralast batteries are available at AutoZone stores. Visit the website and find stores near you, or make an order online and get your battery shipped to your home (shipping fees apply). While you can find these brands in other stores, you won’t be as certain of warranty coverage as buying from the official distributor.
Author: Dave Johnston
Dave Junior is a hands-on automotive technician with experience in performing service, diagnostics, and repairs on domestic and imported vehicles. He enjoys writing and sharing his knowledge far and wide.
What to Know About the AutoZone Warranty
Almost every new vehicle part you purchase from AutoZone is covered by an AutoZone warranty. Just as official manufacturer parts are guaranteed to be free of defects, so too are the batteries and aftermarket parts sold by AutoZone.
Don’t pay for a new part when you can get a replacement for free. This article reviews key information you need to know about the AutoZone warranty, such as how it works and how long it lasts.
We’ll also recommend several top-rated extended car warranties to keep more of your vehicle protected. If you like the idea of having your car’s parts covered in the case of an unexpected breakdown, coverage from one of the best extended car warranty companies can protect the majority of vehicle parts, not just the ones you purchase at AutoZone.
What Is the AutoZone Warranty?
AutoZone provides warranty protection for most vehicle parts and batteries that it sells. The AutoZone warranty is a guarantee that these components are free from defects and are built to last for a certain amount of time. Parts that fail or malfunction during the warranty period can be replaced or refunded at any AutoZone location or fulfillment center.
How Does the AutoZone Warranty Work?
If a part that you purchase at AutoZone fails within the AutoZone warranty period, return the failed component to any AutoZone store and bring your receipt. You may also be asked to provide a valid, government-issued ID. The store will replace the part at no additional cost or give you a refund.
Like any automotive coverage plan, the AutoZone warranty only covers parts that fail after normal use. It does not cover damage due to abuse, misuse, improper installation, off-road use or caused by another failed part. The length of the AutoZone warranty varies by part.
Do You Need a Receipt to Return a Part at AutoZone?
If you have lost your receipt, you can still return your AutoZone part by calling AutoZone Customer Support at 800-288-6966 and requesting the relevant transaction information.
How Long Is the AutoZone Warranty?
AutoZone warranty lengths vary by part and will be outlined on your receipt or can be found on AutoZone’s website by searching your part number. Some parts, like starters, alternators and water pumps, come with a limited lifetime warranty. All AutoZone parts and batteries warranties expire if you sell or transfer your vehicle.
AutoZone Warranty Length: Batteries
Automotive batteries are covered under the AutoZone warranty anywhere from 90 days to four years, depending on the battery brand. Non-automotive batteries are covered between 30 days and two years, depending on the brand.
|Automotive||Optima Yellow/Red Top||2 to 3 years|
|Automotive||Duralast Gold||3 years|
|Automotive||Odyssey||3 to 4 years|
|Non-Automotive||Valucraft LG Utility||30 days|
|Non-Automotive||Duralast LG Utility||90 days|
|Non-Automotive||Duralast Gold LG Utility||90 days|
|Non-Automotive||Duralast Heavy Duty||1 year|
|Non-Automotive||Non-Branded Heavy Duty||1 year|
|Non-Automotive||Optima Blue Top||2 years|
How to Cover Parts With an Extended Car Warranty
The AutoZone warranty will cover parts you purchase from AutoZone, but it doesn’t extend to the parts already in your vehicle. That means the part will have to have broken down once before it’s covered. Additionally, the AutoZone warranty only covers parts – not the labor to replace the part in your vehicle. If you want more coverage, an extended auto warranty may be a good idea.
All new vehicles come with a warranty, but these typically expire after three years. To continue your warranty protection, you can buy an extended vehicle service contract to pay for the cost of unexpected repairs or breakdowns. Check out two of our top recommended providers, Endurance and CARCHEX, below.
Endurance: Best Provider
Endurance offers several levels of car warranty protection that range from powertrain coverage – which protects parts that make the car move, like the engine, transmission and drive axles – to exclusionary coverage for protection of most all vehicle components, with some exceptions.
To give you an idea of how much an Endurance contract might cost, the chart below describes quotes we received from Endurance for an exclusionary contract for a 2018 Toyota RAV4 with 30,000 miles on the odometer.
|Term Length||5 years/100,000 miles|
|Monthly Cost||77.35 for 36 months|
For more information, read our full Endurance warranty review. You can also click below to receive a free quote from the provider to see how much a plan would cost for your vehicle.
CARCHEX: Best for High-Mileage Cars
Like Endurance, CARCHEX offers warranty contracts ranging from basic powertrain to exclusionary bumper-to-bumper protection. See the quote CARCHEX offered for exclusionary coverage on a 2018 Toyota RAV4 with 30,000 miles below.
|Term Length||7 years/125,000 miles|
|Monthly Cost||190.00 for 18 months|
To learn more, read our complete CARCHEX review. You can also click below to get a free quote from CARCHEX.
Featured Extended Warranty Companies
We reviewed the best extended auto warranty providers, and here are our top picks.