Best Deep Cycle Battery For RV #1 Review In 2020

In any kind of sustainable energy system that stores electricity, a key piece is the Deep Cycle Battery. The best deep cycle battery for RV provides a steady wellspring of energy even ​in periods when the photovoltaic structure is not producing power.

With its heavy lead plates, Deep Cycle batteries produce current for longer periods of time and repel corrosion in lengthy charge and discharge rounds.


How Do I Know Which One Is The Best?

When the moment of choosing a Deep Cycle battery comes, it is important to observe the common needs of an RV. It will require non-stop power for its locally available electronic gear, and it will​ aslo require an initial force when you want to move it, or if you are on the road. The battery needs a larger CCA (Cold Cranking Amps) rating since the RV engine is superior. This means you’ve got to make sure your battery has an appropriate CCA rating.

Renewable energy has been embraced by many sectors of the market. Therefore, you have to know if the battery that you’re buying can be recharged using solar power. Some of the best deep cycle batteries happen to be designed to function when using solar panels to recharge.

These qualities are not restricted to only a deep-cycle RV battery, they also apply to other battery uses too. It is important to know them before we can take a glimpse at a battery's components and match them with those of the RV energy necessities:

Best Deep Cycle Battery For RV

1. Cold Cranking Amperes

Cold Cranking Amperes (CCA) is the amperes that the battery will supply when the starting motor is drawing power from it at a temperature of zero degrees Fahrenheit. For example, this measure is important if you are planning on using your RV during winter. Battery performance fades quicker at lower temperatures.

Given that, we can outline that a higher CCA cut assures you that the battery will supply enough energy to keep the engine lively during cold seasons.

2. Cranking Amperes

Cranking Amperes is the power that the battery supplies when it operates at temperatures of around 35 degrees Fahrenheit. Somehow alike to the CCA, this measure exists to advise about how the battery will perform at temperatures above the freezing point of water. The RV battery’s starting performance will be way slicker as long as the Cranking Amperes rating is high.

3. Ampere-Hour Rating

Ampere-Hour Rating means the amount of power that a battery will be able to deliver over a period of time. The power of a battery is set to be measured according to the amount of it that has been supplied. So a battery rated at 240AH will be able to supply an average 12 amperes, continuously for 20 hours.

4. Reserve Capacity

Reserve Capacity is the quantity of power that a battery can provide to the RV for a specified extent of time that it is measured in minutes. Since the common power output used is 25 amperes, a battery ranked RC 125, will stock 25 amperes for 125 minutes, and then the voltage will drop below 10.5 volts.

5. Resistance To Vibration And Shocks

Some batteries have an Absorbed Glass Matt assembly that indicates that it will be able to endure tremors and shocks. It can supply the RV with power without a descent in performance even when you go off-road. A flooded battery can’t do that without going through some performance degradation first.

Batteries are marked with technical specifications that might look difficult to understand at first look, but as people learn how to interpret it correctly, buying a battery from a reliable manufacturer or favorite supplier will be accompanied with the precise knowledge on the item you are planning to purchase and all its glorious technical details.

3 Most Recommended Deep Cycle Batteries For RV You Should Check Out

**Below, you'll see more detailed reviews, but you can also click the links above to see current prices and read customer's reviews on Amazon.

Vmaxtanks Vmaxslr125 AGM12v

Via Amazon

Vmaxtanks offers themselves as a company that dedicates to the manufacturing of high-quality AGM deep cycle batteries. These batteries intend to put forward a greater show and 8-10 years life span in float mode.

This battery has a 20-hour capacity of 35AH. That is equal to an average discharge of 1.75Ap/H for 20 hours. It has a reserve capacity of 75 minutes. That is 75 minutes of continuous use while delivering a current of 25 amperes to your RV onboard gear before the voltage drops below 10.5 volts.

This battery performs very well when used to make a battery bank for your RV. You can visit the FAQ tab at the Vmaxtanks website for service, charging and storage instructions.


  • 20-hour capacity
  • Reserve capacity for 75 minutes
  • Can effortlessly install or de-install from the camper
  • Provides long life and reliable power


  • Reports from users say that the battery can lose some of its reserve capacity after long periods of disuse.

Optima Batteries 8016-103 D34M BlueTop Starting and Deep Cycle Marine Battery

Via Amazon

This battery has a CCA grade of 750A. It is a source of 750 amperes in 30 seconds before the voltage drops below zero degrees Fahrenheit. Its CA rate is 870A, which means that when functioning at a temperature of 32 degrees Fahrenheit, it can supply a current of 870A, before the voltage drops below 7. 2A.

Optima D34M BlueTop is intended as a dual-purpose battery, both starting and deep cycle for all of those users who need a solid starting, strong cranking, and sustainable power source for the RV, even in unforgiving conditions like snow or heavy rain.

Optima comes with a unique SpiralCell design that delivers a clean power source with a strong signal, safeguarding you and the people around.


  • Has a great reserve capacity, making it one of the safest. Reserve capacity of 120 minutes for constant performance.
  • Fifteen times more resistant to vibration for durability.
  • Optimal starting power even in bad weather.


  • Reportedly not very good in the water. However, cases of damage underwater are rare.

Sealed Lead Acid (AGM)

Via Amazon

This Group U1 or GT9L non-lithium battery is guaranteed to give long life and sustainable and factual power for whatever the application you might have for this rated 35AH battery.

It will energize the RV for 20 hours while delivering energy to the indoor equipment with a continuous supply of 1.75 amperes each hour.

This battery is sealed, so you don’t have to worry about leaks or the hydrogen fleeing while recharging the battery.


  • It weighs almost half of what many other batteries do.
  • They fully charge and tolerate tremors and shocks proudly.
  • Able to provide continuous supply, making it a safe and reliable battery.


  • Some models have reportedly shown signs of trouble with reserve capacity.

Final Thoughts on the Best Deep Cycle Battery For RV!

​If you simply move from your house to a camping area, a marine or little engine battery will do just fine. Your RV almost certainly comes with one of this kind.

Now, if you choose to go boondocking, you might need something with a greater capability. You will now only have to upgrade to a deep-cycle battery and put to good use your newly acquired knowledge at the moment of making your purchase.

If you liked this article and your interest to know more about RV lifestyle and tech is not satisfied, please leave your feedback in the comment box below. See you in the next post!