9 Best AGM Batteries: Reviews of Deep Cycle Battery Brands

Choosing a Quality AGM Battery

Usage/Vehicle Compatibility

To find the best AGM auto battery, you must first consider the engine size, charging system, terminal requirement, and starter demands of your vehicle. Even if the AGM car battery says it is universal, you still want to make sure it will fit. In most situations, it’s best to find the 12V AGM battery meant for your vehicle.

Battery Group/Size

As with most batteries, the AGM battery type also comes in a variety of sizes. Some of the standard AGM battery sizes include Group 24 batteries (10.25 x 6.8125 x 8.875) and Group 27 batteries (12.0625 x 6.8125 x 8.875). If you already have an AGM battery installed, you can simply purchase the corresponding replacement to ensure the appropriate size.

Depth of Discharge

Reserve Capacity

The reserve capacity is the number of minutes a fully charged AGM battery will discharge 25A of current at normal temperatures until the battery becomes ineffective and produces 10.5V. The AGM vs. standard battery has a higher reserve capacity, measuring at least 100 minutes in models from reputable brands.

Operating Temperature

You want an AGM RV battery that will work in a variety of temperatures. The heat causes batteries to discharge faster, but you should also consider the cold weather. Look at the cold cranking amps of the battery to determine how well it will produce a current when the temperature drops.         

Build Quality/Durable Construction

There are plenty of times that you will be traveling over rough terrain, especially if you need AGM golf cart batteries to search for lost balls. Whatever you use your battery for, make sure it can handle vibration and shocks. Reputable companies build batteries in durable, heavy-duty cases.

Safety - Handle

When you replace the best AGM trolling motor battery, you want to ensure that it has a convenient handle to make the process smoother. In general, the AGM battery is safer to use versus conventional lead-acid batteries.

Price & Warranty

If you want the best price AGM deep cycle battery, you will have to do a little hunting. However, we recommend you look beyond the price to find the best value AGM battery. Choose a reputable brand and evaluate the warranty term.

1. XS Power D3400 XS

The best AGM car battery that we have found on the market is this option from XS Power. This 65Ah 12-volt battery contains an electrolyte suspended in fiberglass. This durable construction isn’t just spill-proof and sealed, but also vibration-resistant and valve-regulated. You can easily mount this battery in any position. NASCAR has relied on this brand to provide reliable power, and so can you.

The majority of consumers talk about how reliable and mind-blowing the power is. In fact, there are virtually no negative comments worth reading. Besides that, the company provides a three-year warranty for complete peace of mind.

Beyond that, XS Power also maintains a 60-day money-back guarantee, which states you can try out the battery risk-free. If it doesn’t perform the way you expect, you can get all of your money back. However, the majority of people aren’t looking to return this battery once they use it.

2. UPG #45978 UB121000

The best 100Ah AGM battery for the money might be this option from Universal Power Group. This 100Ah AGM battery is spill-proof and maintenance-free. It can also be mounted in any position, and you won't need to worry about vibrations or shocks.

If you spend a lot of time traveling off-road, this is something you must consider to extend the life of your equipment. As a deep-cycle battery, it is also intended to last longer and provide more power. However, there have been a few reviews that talk about premature failure.

This battery does weigh slightly more than the last option, making it a little harder to replace. However, the cost savings makes it all worthwhile. In addition, the company stands by the production of this battery with a one-year warranty. What’s unique about this battery is that it works well with specialized setups for solar or wind charging configurations.

3. VMAX MR137-120

4. ACDelco ACDB24R Advantage

If you need a reliable replacement for your GM vehicle, you want to look to ACDelco, the leader in OEM replacement parts. This automotive BCI Group 51 battery offers the reliable starting power you rely on. The battery will work on more than just automobiles, but you can also install it in your industrial, recreation, and marine equipment. The ACDelco battery is made to meet any need required. It’s been lab-tested and proven in the field.

Not only does this battery provide 325 cold-cranking amps, but it also comes at a reasonable cost, making one of the best values on the market. It’s also a lightweight battery, making it easier to install during a replacement. Reading through the customer reviews, you can see how much people rely on this power.

In addition, the company is happy to provide a lengthy 24-month warranty. If you want power that’s going to last, without breaking the bank, this might be your best option.

5. Weize

What is the best AGM deep cycle battery? We like this option from Weize. It is a 12V 100A sealed lead-acid rechargeable battery. Because of the deep cycle design, you can expect a longer service life and faster deep discharge recovery.

You can use this battery with solar and wind charging systems, making it ideal for RV campers, trolling motors, and electric wheelchairs. You could even use it with your golf cart, portable tools, and industrial equipment.

The lower price is excellent for people looking to get power on a budget, but it also indicates that the battery itself might not last as long as some other options on our list. However, the company provides a one-year warranty, and the customer reviews remain high. The only difficulty that some people had was they received a 50A battery instead of the 100A. A simple call to customer service would straighten this mix-up out.

6. Odyssey PC680

What is the best AGM battery for an RV? This 12V battery is one of the lowest-priced options on the market and can serve your basic needs. It provides 170 CCA and claims to have a longer cycle life, although the reserve capacity is only rated at 24 minutes. Odyssey batteries hold up under extreme stress and don't disappoint owners, especially when considering the money-saving benefits.

It also recharges quickly. The company estimates that it will only take four to six hours for a complete recharge. Plus, you can mount this battery in any position, since it will not leak or spill. With the vibration-resistant construction, you know that driving off-road won't affect the life of your battery.

In addition, the company graciously offers a two-year replacement warranty that doesn't include pro-rating, as some other companies do. You can use this battery for your RV, golf cart, boat, and so much more.

7. Mighty Max Battery ML35-12

Another low-cost option comes from Mighty Max. Even though this battery is bargain priced, you aren’t sacrificing any of your basic power needs. This 12V deep cycle AGM battery is maintenance free and can be mounted in any position. It also operates in a variety of operating temperatures, so you can use it in any climate, hot or cold. You can also hook this battery up to solar charging for maximum versatility.

The durable construction ensures shock- and vibration-resistance. However, it’s difficult to estimate what the reserve capacity of this battery is. Considering the low price, it’s likely that it doesn’t have a lengthy reserve, like some of the higher-end models.

However, the company does provide a one-year warranty and a 30-day refund policy. Plus, the customer reviews prove that many customers have been thrilled with the performance. In fact, it might have better reviews than some of the overly expensive brands.

8. Optima Batteries 8016-103 D34M

Do you need an AGM deep cycle marine battery for your large watercraft? This 12V option is made with premium materials to ensure maximum durability. It even provides optimal starting power, no matter what the weather is doing. If you want to fish in the cold rain, you can do that without worrying about the motor starting. Use it as a boat or RV battery and mount it in any position.

In addition, Optima batteries are rated to be fifteen more times resistant to vibrations, allowing them to last longer than many other brands. This particular battery features a 120-minute reserve capacity and has 870 cranking amps for maximum performance.

It also doesn’t weigh that much, so replacement is simple. The company even provides a 24-month warranty, which is double the time of what many other brands provide. Use this on your large marine boat for reliable power every time. Use it with the best marine AGM battery charger to keep it running as it should.

9. Delphi BU9094R

If you need reliable, consistent power for your pickup truck, you want a heavy-duty AGM battery, such as this one from Delphi. It provides extended cold-cranking amps, which offers the most power for today’s demanding motors and electronics. The Group 94R battery has the reverse terminal design and offers twenty times more protection against vibrations, so you can drive anywhere.

In addition, the durable construction ensures optimized component compression, fortified welds, straps, and posts for a long life. The company even backs up that theory with a 36-month warranty, which is exceptionally long in this industry.

Delphi also promises superior corrosion resistance and a specialized manifold venting system. The price is reasonable, and the reviews prove why this battery continues to be a top seller. A few of the reviews talk about having trouble with the smaller size. However, these problems can be resolved by ensuring that your vehicle calls for this type of battery.

Understanding AGM Batteries

AGM vs. Other Battery Types

Charging & Reconditioning AGM Batteries

Storage, Care & Maintenance

Here are a few storage and care tips for your AGM battery to ensure the most extended life possible.

Here are a few more AGM battery maintenance tips that might prove to be useful in your situation.

People Also Ask (FAQs)

How often should AGM batteries be tested?

How long do AGM batteries last?

The life of an AGM battery depends on several factors. These include the self-discharge rate, maintenance, and temperature. Typically, an AGM battery should last between four and five years.

How many volts should my AGM battery have after it is charged?

Once you have used the best charger for AGM deep cycle battery, the voltage should read a minimum of 12.8V.

What are the most common reasons they fail prematurely?

Most often, batteries will fail prematurely because of poor charging and discharging practices.

What is the difference between a deep cycle and a regular AGM Battery?

A 12V AGM deep cycle battery is constructed to provide longer power over extended periods. It also runs more reliably until it is eighty percent discharged or more.

Is it possible to charge AGM batteries with normal chargers?

To ensure that your battery lasts as long as possible, it’s ideal to use the best 12V AGM battery charger. You will find what the charger can be used for in the product specifications.

Conclusion