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Best 12 Volt Deep Cycle Battery Reviews


Running out of juice is the least that you’d want to experience when you’re camping. Try to imagine the hassle of not being able to use your refrigerator, TV, or AC on-board. Perhaps you can also imagine how frustrating of not being able to use your smartphones because you can’t recharge it.

You can prevent all these inconvenience by getting the best 12 Volt Deep Cycle Battery out there. This version of battery can supply consistent power to your RV appliances and RV electronics without stressing yourself.

If you’re not sure how to pick one, then read on! 

What is a 12 Volt Deep Cycle Battery?

This kind of battery is an efficient and sturdy battery that recreational automobile owners rely on to power most of their on-board appliances and electronics such as TV, microwave ovens, blenders, coffee machines, water pumps, and a lot more. This particular battery is also engineered and made to supply your rig with constant current that can last for a longer period of time compared to conventional or regular car batteries out there in the market. Depending on its construction and manufacturer, this kind of battery can actually discharge about 70% of its capacity.

Why Do You Need a 12Volt Deep Cycle Battery

Perhaps you’re thinking about why you even need a 12 Volt Deep Cycle Battery for your recreational automobile. Aside from the facts we mentioned above, the benefits you can get from having this version of battery is plenty. For example, if you’re planning to go off-grid, then 12 Volt deep cycle batteries are valuable companion to supply power to your RV appliances and electronics as they’re engineered for repeated recharging and discharging.

They are ideal energy storage for wind or solar energy applications. If you have one, you practically have a peace of mind of having consistent power in places where you must have a backup power source including parks and camping grounds without hook-ups.

Furthermore, having your own 12 Volt Deep Cycle battery is crucial if you’re seeking for a backup power source, dual purpose battery, starting battery, or energy storage battery, depending on the manufacturer and brand. In addition, if can have one, you can also ensure that your loved ones’ comfort is always consistent whenever they go boondocking or camping because they would be able to use their Rig’s electronics and appliances without any inconvenience.

How Does It Work

12 Volt Deep Cycle batteries are engineered and intended for repeated discharging and recharging.

Each time you’re recharging it; its bank will accumulate the energy then starts the cycle or process again. Compared to starting batteries, 12 Volt deep cycle batteries are made with solid construction and thicker plates. There’s minimal surface area in the thicker plates of this type of batteries, which implies that it has less power needed compared to a starting battery.

And in terms of repetitive aspect, the 12 Volt deep cycle batteries are engineered in a way that they can discharge for up to 20% of their max charge because of their thick plates which are stronger compared to sponge version plates.

Best 12 Volt Deep Cycle Battery Reviews

1. Vmaxtanks Vmaxslr125 AGM Deep Cycle 12v 125ah SLA rechargeable Battery


Vmaxtanks Vmaxslr125 AGM Deep Cycle 12v 125ah SLA rechargeable Battery for Use with Pv Solar Panels,Smart chargers wind Turbine and Inverters

Engineered with a durable and rugged exterior, this version of VMAX battery serves all heavy-duty applications. It uses an electrolyte suspension system that comprises of Absorbent Glass Mat of high porosity that completely absorbs and has the electrolytes. In addition, this battery from VMAX is incorporated with military grade plates that give upgraded performance with extra longevity if there are consistent discharges.

Furthermore, this 12 Volt deep cycle battery doesn’t need any type of maintenance throughout its float live which is typically between 8-10 years. Its feature to give high performance even after a number of discharges makes this VMAX battery to become prominent. Aside from that, similar to other AGM batteries, this one will only discharge at 3% every month. In short, it can lie idle for a couple of months and then recharged to operate without any huge damages.

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  • Reasonable price
  • Has excellent warranty offer
  • Works with inverters, wind turbines, smart chargers, and solar panels
  • Doesn’t produce gasses or fumes
  • Works for 12V, 24V, and 48V systems
  • Incorporated with military grade custom made plates
  • Offers superior performance because it’s a deep cycle batteries
  • Ultra-low resistance
  • Extremely low self-discharge rate


  • Incredibly heavy
  • VMAX BC1204 12V 3.3 Amp charger is required for best optimal results


2. Universal Power Group U1 12 Volt 12V 35Ah Battery Wheelchair Scooter – 2 PackUniversal Power Group (35Ah)This battery is engineered or is developed by Universal Power Group for higher performance requirements. It is absolutely a deep cycle battery.

This battery comes with a 12-volt rate. It is normally used for deep cycling. In fact, it is actually designed for deep cycling purpose in particular. In addition, it is perfect to use for a trailing motor. This battery is also great for the purpose of powering 12 Volts consumer electronics as well as on-board 12 Volts systems.

Furthermore, it also comes with a sealed design and it utilizes the AGM technology that makes it a deep cycle battery. Its battery comes with a 100Ah rating guarantee and is kind of ideal thing for deep cycling. It also comes with an excellent storage capacity.

This battery has got a sealed design and it used the AGM technology which makes it a deep cycle battery. Its lifespan is also really good that’s why it is quite large.

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  • Ideal for trolling motors
  • Uses AGM technology
  • 100Ah rating
  • Excellent storage capacity
  • Maintenance-free
  • Safe to handle in any position
  • Very efficient performance
  • Very reasonable price
  • Has great warranty offer
  • Easy to install
  • Hassle-free to use


  • Should not be discharged below 50% for long-term optimal usage
  • Quite bulky and heavy


3. Mighty Max Battery 12V 55Ah Power Boat Pontoon Electric Trolling Motor Deep Cycle Battery

Mighty Max Battery 12V 55Ah Power Boat Pontoon Electric Trolling Motor Deep Cycle Battery Brand Product

This battery is another 12Volt Deep Cycle Battery, except that it’s quite cheap yet it offers a number of impressive features that you may not expect from a battery an expensive price range.

To begin with, it is very compact as it only measures 7.68” x 5.16” x 7.13”. It is also not that hefty at 23.15 lbs. In addition, it is an AGM battery which is spill-proof and it can be utilized for a broad range of operating temperatures. It can last long no matter whether you are using this for low or high temperatures.

Furthermore, it is resistant to shocks and vibration. And because it is spill-proof, you can mount it at any angle you desire. You can also use it in enclosed or indoor settings since it certainly won’t leak at all. But aside from that, you’re not required to do any maintenance on it at all.

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  • Can be applied to a wide range of applications
  • Uses absorbent Glass Mat which is AGM technology
  • Resistant to vibrations and shocks
  • Long-lasting performance
  • Maintenance-free battery
  • The battery is used in small boats.
  • Doesn’t require special charger
  • Doesn’t occupy as much space
  • Easy to install and leak-proof


  • Not really a powerful substitute
  • Got no connectors in the box which you need to buy separately


4. VMAXTANKS VMAX V35-857 12 Volt 35AH AGM Battery Marine Deep Cycle HI Performance Battery

VMAXTANKS VMAX V35-857 12 Volt 35AH AGM Battery Marine Deep Cycle HI Performance Battery Ideal for Boats and 18-35lb minn kota, minnkota, Cobra, sevylor and Other trolling Motor (12V 35AH, Group U1)

The VMAXTANKS VMAX V35-857 comes with a 35Ah rating yet in many aspects it is obviously superior to others that also come with 35 Ah rating.

This battery is incredibly durable and it can last long compare to your regular battery. The reason is because it is incorporated with military-grade metal plates, premium-performance, and they are much thicker to boot. This makes the battery stronger and durable, thus it can withstand high vibration levels much better.

In addition, it comes with a long-lasting and robust outer casing which is made of extra tough and sturdy ABS plastic. This is engineered to be used for 18 to 40 lbs. thrust trolling motors. It operates great for 30-pound thrust trolling motors and it can run for at least 5 hours at low speeds.

And lastly, it can be a green backup power alternative to generators if you’re looking for something in reserve to power your laptop in your house if the power goes out. In fact, it has enough power to run your DVD player and TV if you’re planning to camp. It doesn’t really require maintenance at all.

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  • Lighter in weight compared to its equivalent competitors
  • Comes with convenient carry handle
  • Comes with maintenance-free operation
  • No need to check electrolyte level or add water
  • Very durable
  • Spill-proof which makes it great for setting up at any desired angle
  • Compact and lightweight
  • Has enough juice for several hours at low speeds


  • Quite pricier compared to other prominent brands
  • Higher charging voltage than a car battery adds inconvenience
  • User must get a VMAX BC1204 12V 3.3 Amp charger for optimal results


5. ExpertPower 12v 33ah Rechargeable Deep Cycle Battery

ExpertPower 12v 33ah Rechargeable Deep Cycle Battery [EXP12330] Replaces 34Ah, 35Ah, 36Ah

This battery is engineered with the top line materials. It is ideal because of its accurate way of being engineered, not to mention that it is designed with an alloy grid which is calcium coated.

Furthermore, the Expert Power 12V 33Ah battery can give impressive performance and life of service whether floating applications or cyclic. Aside from that, it is developed out of an AGM technology that has the layout for extra valve regulation.

Moreover, this battery is ideal to use in outdoor and indoor settings. It also works precisely with a great performance since it doesn’t leak. Overall, it is a good product and can cater to most purposes. Aside from that, the manufacturer is a trusted and credible brand.

If you’re looking for hassle-free installations, then this battery is perfect for you.

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  • User-friendly and sturdy design
  • Holds charge for extended periods
  • Maintenance-free
  • Lightweight and very portable
  • Works on all 12 Volts systems
  • Sealed lead-acid battery
  • Incorporated with AGM technology for extra security
  • Comes with reinforced steel crews


  • It is difficult to carry around
  • Quite hefty compared to other batteries 


Factors to Consider When Choosing the Best 12 Volt Deep Cycle Battery


Obviously, if you’re looking for the best 12 Volt deep cycle battery, then you must research about the most prominent brands which manufacture them. Opting to a credible and reliable brand can give you the highest level of satisfaction since such brand is already proven and tested by a lot of consumers.

Technology Used

Picking the best 12 Volt deep cycle battery for RV is very possible by spending time evaluating the technology used in each model. Essentially, all batteries engineered for recreational automobiles utilize lead-acid technology for optimal performance. However, remember that each one also comes in different packages.

One of the simplest packages is known as the flooded cell wherein the battery is packed in a liquid water or acid solution. You can also go for the most recent models that are developed with a maintenance-free technology.

To sum it up, try to see what certain technology is used by a specific battery to guarantee that you’ll be able to get the right one for your needs.

Weight and Size

These two factors also significantly contribute a lot to your chosen battery’s overall performance. You won’t really be able to expect the battery to provide you impressive satisfaction if it’s too hefty and bulky. You can find brands that sell heavy-duty batteries. While they’re actually nice options, try to make sure that you spend time evaluating how heavy they are. Take note that there are actually heavy-duty versions of battery that weigh up to 2,000 lbs. while being in a 12 Volt pack. If you need a higher capacity battery, then try to consider purchasing batteries with bigger sizes but no very small ones. 

Power by Temperature

Your chosen battery must be able to work even at low temperature range so that you can be sure that it would be able to keep on giving power even at freezing temperatures. Now if you’re located in a humid or hot area, then try opting to a battery that can sustain its performance at temperatures of at least 30 degrees.

Discharge Depth

If you’re opting for a lead-acid version, then you must note that its life cycle and discharge depth are interconnected. In addition, you also need to know that deeper individual cycles also means that it can only give fewer cycles essentially. In short, try looking for a deep cycle battery that comes with a discharge depth which is able to maximize its life cycle.

Amp-hour Rating

This factor is crucial in order to guarantee that you’ll be able to get the power you need. Amp-hour factor is very important to consider since it can tell the specific current amount that the battery can supply over a certain period of time. For example, a battery which is rated at 100Ah can only provide a supply of 100 Amps per hour. All in all, if you’re looking for more power, you must look get a high-capacity deep cell battery since it can also serve for a longer period of time aside from providing a steady power output.

Vibration and Shock Resistance

If your chosen battery can handle constant vibrations and shocks, then rest assured that its performance will not be affected at all. To get one which is vibration and shock-resistant, then try to look for a sealed design that allows you to mount it in any angle without issues on spills or leaks. In addition, a vibration and shock-resistant battery should also come with a sturdy housing to guarantee that it would be able to handle vibrations, impacts, and shocks effectively. 


Normally, deep cycle and starter batteries have 12 volts of direct current power. On the other hand, certain RV owners simply connect 6 Volts batteries in order to have a 12 Volts system for their rig. But all in all, 12 volt batteries are the most common option. To sum it up, checking on the voltage of the battery you’re considering can also mean the huge difference between a bad and a good choice.


While it is tempting to purchase an inexpensive product, you need to make sure that it’s not actually offered at such low price range due to subpar quality as well as low cycle life performance.

It’s true that you can save if you go for the most inexpensive battery available in the market today. However, you must be aware that you might be spending more in the long run due to the need of replacing it frequently.

To sum it up, try figuring out which battery is offered at the most inexpensive price while also providing you real value for the amount you used.


Again, aside from comparing the prices of the best 12 Volt deep cycle batteries, make sure that you don’t forget checking their charging method, vibration-resistance, voltage, amp-hour rating, etc. By knowing the features of the battery you’re planning to buy, you’re rest assured that your hard-earned money will be worth the spending.

In addition, you must also choose based on your rig’s power necessity as well as your purpose for purchasing this type of battery.

Now, we hope you can make a wise decision when purchasing a 12 Volt deep cycle battery for your needs by referring to this guide, and comparing your choices based on the top picks we’ve discussed today.

If you have any feedback or opinions about our topic, then please feel free to comment down below.

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