The 5 Best RV Deep Cycle Batteries of 2021


If you are an owner of a recreational vehicle, then it is important that you have a RV deep cycle battery in your vehicle. It is one of the most important components in the electrical system of the RV. The battery system allows the RV owner to use the devices and appliances off-grid without making use of a 110V power supply.

The RV deep cycle batteries also allow the user to store energy coming from solar panels. If you are looking to build your RV power bank for the first time or looking to enhance the capacity of the existing battery pack, then this post is for you. Let us discuss the top best RV deep cycle batteries here along with their buying guide.


Best RV Deep Cycle Batteries

Quick Answer: The 5 Best RV Deep Cycle Batteries – [2021]

  1. Universal Power Group DEEP Cycle Battery
  2. Vmaxtanks SLA Rechargeable Deep Cycle Battery
  3. Odyssey PC680 Battery
  4. Optima Batteries BlueTop and Deep Cycle Marine Battery
  5. Battle Born LiFePO4 Deep Cycle Battery

Best RV Deep Cycle Batteries Reviews

#1. Universal Power Group DEEP Cycle Battery


Universal Power Group DEEP Cycle Battery At a Glance:
  • 12V 100 Ah deep cycle battery
  • Weight: 63.93 pounds
  • AGM batteries with little maintenance
  • Batteries are spill proofed
  • Rechargeable battery
  • Can be mounted in any position
  • Resistant to shock and vibration
  • One-year warranty
This is an excellent deep cycle battery for recreational vehicles that weighs about 64 pounds. This is a spill proof battery that requires very minimal maintenance. These batteries are rechargeable and they can get mounted in any positions.

They are also absolutely resistant to vibration and shock. The battery comes with an acid proof body and is indeed a heavy duty battery.

You can vouch on the durability of these batteries as they feature an acid proof body. This AGM battery is maintenance free, and thus you need not spend a lot of time for maintenance. The battery is also absorbed by a fine fiberglass mat.

The plates of the universal battery are rectangular in shape as that of standard lead-acid batteries. As they are resistant to vibration they will last long as vibration is the major reason for premature battery failure.

#2. Vmaxtanks SLA Rechargeable Deep Cycle Battery


Vmaxtanks SLA Rechargeable Deep Cycle Battery At a Glance:
  • 12 volts 125 Ah Deep cycle heavy duty battery
  • Weight of the battery is 75 pounds
  • Charging current is 30 A max.
  • Recommended charging voltage is 14.7 V
  • Military grade custom made plates
  • Life span of 8-10 years
  • 99% recombination capabilities
Vmaxtanks is one of the most renowned manufacturers of high quality AGM deep cycle batteries. These batteries render superior performance along with 8-10 years of life span when they are in the float mode.

The VMAX batteries come with a hot stamp and labels on top of the battery along with a warranty of about 12 months. This deep cycle heavy duty battery has a power of 12 volts with 125 Ah battery power.

The float service life span of these batteries is between 8-10 years and it has been designed for 99% recombination capabilities. It comprises of military grade custom made plates for exceptional durability.

The battery does not release any dangerous fumes or gases. They do not contain any free roaming fluid such as a lead acid battery and they have minimal venting to use them inside.

#3. Odyssey PC680 Battery


Odyssey PC680 Battery At a Glance:
  • 3-10 years of service life
  • 100% charge in 4-6 hours
  • Fast recharge
  • Ling cycle life
  • Save time, money and aggravation
  • Resistant to vibration
Recreational vehicles demand a powerful battery that has been built to take constant pounding irrespective of the terrain the vehicle is been used. The battery has a two-year full replacement warranty and has a longer service life.

They have a total of 3-10 service life and thus they help to save the time, money, and the aggravation of the consumer. These batteries have a 70% longer cycle life when compared with the conventional deep cycle batteries. They have a high stable voltage for a long time period.

The recharge faster and have the highest recharge efficiency in the market. They can be completely recharged in just 4-6 years. They do have mounting flexibility and they feature a non-spilling design.

These batteries are also resistant to vibration and their design protects them against high impact shock and mechanical vibration. These batteries are also extremely temperature tolerant.

#4. Optima Batteries BlueTop and Deep Cycle Marine Battery


Optima Batteries BlueTop and Deep Cycle Marine Battery At a Glance:
  • 12-volt charge
  • 750 cold cranking amps
  • Weight of the battery is 43.5 pounds
  • Optimal starting power
  • Mounts in any position
  • Resistant to vibration
  • Extremely durable
  • Reserve capacity of 120 minutes
The Optima D34M blue top has been designed as a dual purpose battery (as deep cycle and house battery) for people who demand a strong cranking, sure starting and maintenance free power source for their RV and boat even at the most difficult conditions.

These batteries feature a unique SpiralCell design that helps with a clean and a strong power source, ensuring safety and constant power supply.

The high reserve capacity of these batteries have a long shelf life and will offer the necessary power and charge wherever and whenever one needs it. The power capacity of these batteries is 12 volts and it weighs 43.5 pounds.

Their capacity is about 55 Ah C20. These batteries are at least 15 times more resistant to vibration and are thus extremely durable. Their reserve capacity is about 120 minutes of constant performance. You can mount the battery in any position during storage.

#5. Battle Born LiFePO4 Deep Cycle Battery


Battle Born LiFePO4 Deep Cycle Battery At a Glance:
  • 100 Ah 12-volt battery
  • Weight: 29 pounds
  • Great battery for the boat, RV and off grid power system
  • Built in battery management system
  • Lithium ion technology
  • Made of 100% safe and non-toxic materials
  • Lightweight and versatile
This lithium ion battery holds the built in BMS system. This built-in battery management system helps in protecting the battery from the most common problems of battery failure, secondary to temperature volatility and ground faults.

The BMS also helps in regulating the amount of power taken by the battery and also behaves as a shut off system as well. These batteries have exceptional mounting capabilities, exceptional longevity and are extremely cost effective. They are also safer than lead acid batteries and have no protection against ground faults.

These are green energy batteries and are made up of 100% safe, non-toxic and renewable energy. These batteries last for more cycles and can be charged or discharged repeatedly. These batteries are lightweight and are extremely versatile.

There is no acid in these batteries and are thus safe for marine, golf cart, RV camping and off grid applications. The battery also comes with a flat 10 years’ warranty from the manufacturers.

Buying Guide For Best RV Deep Cycle Batteries

Best RV Deep Cycle Batteries

What To Look For When You Buy a RV Deep Cycle Battery:

It is important that we choose the best RV battery to ensure that the vehicle continues to run as efficiently as one hopes for. In order to help you find the best battery for your vehicle, it is important that you focus on the following important factors.

  • Capacity
  • Discharge
  • Different modes of charging
  • Voltage
  • Capacity to handle temperature fluctuations
  • Capacity to withstand vibrations


The capacity of a RV battery is a measure that is generally given in Ampere hours. This is the indication of a specified amount of current that the battery is capable of delivering over a period of time. For instance, if you choose a battery model of 100 Ah capacity, then it should be capable of delivering 100A for an hour.

While choosing a battery for your RV, make sure that you choose a high capacity one, as it has the ability to store more power and to serve longer. Also, do check the size and the weight of the battery as you might not have much room to store a huge battery in your vehicle.

While choosing the ideal capacity of your battery, keep in mind the energy requirements of the vehicle and the quantum of power that you would require on a daily basis. Also choose a deep cycle battery that is capable recharging with the help of solar power, generator and even with an electric hookup at the camp arena.


One important aspect to inspect while choosing a high quality RV battery is its depth of discharge. This is generally given in the form of percentage and it also shows a specific amount of power that the battery discharges. Our best recommendation will be to look for a deep cycle battery with enough depth of discharge so that it is capable of optimizing its own life cycle.

Different Modes of Charging:

Consider how you will charge the battery. Will you make use of a solar power or a generator or a shore power while charging the battery? The best way is to combine all three ways. The charging profile that you choose will depend largely on the type of battery that you own. This will ensure that you supply the battery with the perfect charge at the perfect time.

The controller in the battery also helps in a great way to adjust the voltage and the current automatically, rendering protection for the battery. This is regardless of the source of charge that the battery obtains.


Voltage refers to potential electrical differences and the deep cycle batteries have a design to possess a 12-volt direct current. Some RV owners also decide to combine two 6-volt series in a means to build 12-volt batteries that can be used for their RVs. The solar power kits and the chargers are capable of working on 24-volt batteries in an attempt to convert DC to AC and to fit the battery perfectly.

Capacity to handle temperature fluctuations:

Check the ability of your RV deep cycle battery to render power at both high and low temperatures. At instances of low temperature, you will require a battery that power even during winter months, when the temperature can be extremely low.

With RV battery that functions at low temperature, you have an assurance that you get power supply even at the 0-degree environment. Choose a battery that is good to function in high temperatures as well. This is important if you stay or drive at hot and humid areas. Choose batteries that is capable of functioning between 0 degrees and 35 degrees.

Capacity to withstand vibrations:

Check the overall built quality of the battery that gives a measure of its ability to withstand vibrations. The battery should possess a solid and sturdy built quality so that the battery is capable of withstanding shocks and vibration. The battery should also be shock resistant and resistant to vibration to prevent you from spending a good deal of money on repairs.


RV Deep Cycle Batteries- FAQs:

Is the deep cycle battery different from a car battery?

Yes, they are different. A car battery or an engine battery has a design to offer a quick burst of intense energy so as to start the car engine. They stock a huge volume of cold cranking amps so as to offer an initial high current.

Once the engine starts, they will not discharge any further. On the contrary, the deep cycle battery serves as a house battery for your Recreational vehicle to render power for your daily needs. Their design allows for a higher discharge before they need to get charged again.

Will it be a good idea to start an engine with a deep cycle battery?

As a general rule, you should not start the engine with the battery, but if it si capable of delivering adequate cold cranking amps, then you can as well do it. But deep cycle batteries for RVs is not meant for this use.

How many batteries will I need for my RV?

This totally depends on the energy consumption that one already has in their RV. The more the devices and appliances that you will use, the higher is the consumption. By wiring batteries in series, it is possible to increase the voltage as desired.

How to store the deep cycle batteries?

Follow the instructions from the manufacturer pertaining to the care, handling, and storage of batteries. You can store and use the wet and floor upright with some ventilation.

AGM or Gel deep batteries can be stored upright or lying down without any damage or loss. Temperature can also affect the batteries when they are not in use. Store them above freezing temperatures if you are not able to maintain the charge in freezing temperatures.


Different Types of Deep Cycle Batteries For RV:

  1. Flooded/ wet battery – The electronic plates of these batteries completely submerge in the electrolyte fluid. They have the longest life, but carry risks of spilling.
  2. Absorbed glass mat batteries – These batteries hav e a seal and thus they vent zero gas. The electrolytes in these batteries are contained in fiberglass mats.
  3. Gel – In gel type batteries, the electrolyte is mixed with silica to form the gel.
  4. Lithium-ion batteries – These batteries are low weight and are ideal for high performance and efficient charging. These batteries are expensive, but they function well in all temperature conditions.


Some Important Factors To Consider Before Buying a Deep Cycle Battery:

Best RV Deep Cycle Battery

An RV deep cycle battery helps you enjoy your picnics at the fullest extent by ensuring that all your all board appliances will continue to function as they desire. These batteries feature a design to store a huge amount of power for a long period of time. But there are some important factors to keep in mind while choosing these batteries to make sure that one makes the best out of these deep cycle batteries.

  • Safety: The lithium ion deep cycle batteries include a lot of built-in safety measures. When the battery is close to overheating temperatures, it shuts down automatically, thus preventing fire or explosion. Choose a battery with an ample safety mechanism for your RV.
  • Less weight: These batteries are extremely lightweight. As the RV is already big or heavy, it is a good practice to look for a battery that is not much heavy. With the lower weight, you could find these batteries are of major help to boost the capacity and speed of the Recreational vehicle.
  • Capacity: Choose a battery that allows you to make sure of approximately 50% of its original rated capacity. Such batteries will feature sustainable voltage levels, allowing the user to provide up to 99% usable capacity. This way, you can ensure additional time on the road, when you are away from your home.
  • Eco-friendliness: Choose batteries that are safe for the environment as well, thus making them ideal green options. These batteries have the design to supply power to the vehicle through clean energy while concurrently minimizing CO2 emissions. Also, disposing these batteries will also be safe for the environment. Lithium-ion batteries are by far extremely environment friendly as they are made up of recyclable materials and they are also in turn easily recyclable.

Final Verdict:

The battery of your RV is the most important component of its electrical system. With the help of these batteries, there is a chance of using the appliances and devices off grid. We hope our guide helps you in choosing the best deep cycle battery for your recreational vehicle, so that you have a fun filled and hassle free vacation every time.


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