Unless you want to suffer the inconvenience of having no power, you must invest in the best RV deep cycle battery.

This guide explains all the important factors to consider when choosing the right deep cycle battery. 

I have experienced the frustration of not having proper ventilation and lights on a cold night because I run out of electricity.

Worse, I had to lessen my time in using my phone and television because I can’t charge.

An excellent RV battery must have a large reserve capacity to provide consistent power to your equipment and appliances over a long period.

The good thing about a deep cycle battery is that it is designed for repeated discharging and recharging—making sure it withstands RVing conditions. 

If you have lots of electronics inside your RV, I’ve compiled the best RV batteries for different needs.

Here, you’ll see everything you need to know about deep cycle batteries, especially their features that make them reliable energy storage and a backup power source.


At A Glance: Our Top Picks For Best RV Deep Cycle Battery Choices For 2023

If you are considering other factors such as portability, silent operation, fast drying times, and user-friendly settings, then there are 10 remaining models for you to choose from.

  • Best AGM Deep Cycle Battery: XS-Power-D3100
  • Best Lithium-Ion Deep Cycle Battery: Battle Born LiFePO4 12V Deep Cycle Battery
  • Budget-Friendly Option: WindyNation 12V Deep Cycle Battery
  • Premium Choice: Renogy 12V Lithium-Iron Phosphate Battery
  • Best for Solar Charging: Universal Power Group UB121000 12V Deep Cycle Battery
  • Perfect for Cold Environments: Optima Batteries 8016-103 D34M Deep Cycle Battery
  • Best for Sequencing: Renogy AGM 12V Deep Cycle Battery
  • Most Lightweight and Compact: Odyssey PC925 Automotive and LTV Battery
  • Best Ergonomics and Construction: VMAXTANKS VMAX V35-857 12V Deep Cycle Battery

1. Best Agm Deep Cycle Battery: XS-Power-D3100

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The XS-Power-D3100 is a 12V battery designed to provide supplemental power to your vehicle or high-performance sound system.

Things We Like

  • Sealed AGM design and reinforced ABS plastic case.
  • Less voltage drop.    
  • Resists vibrations and high temperatures.

Things We Don’t Like

  • It does not include battery terminals.
  • The heaviest battery on this list.

For starters, this model stores energy. Hence, there is no need to add a capacitor to the system to get a quick burst.

This is one of the best RV deep cycle batteries because of its 1360 cranking amps and 110 amp-hours of discharge capacity.

The capacity enables the unit to supply electrical power to a high-powered audio system.

Basically, this unit is a six-cell, sealed-valve regulated, lead-acid battery.

It optimizes a fibrous material to suspend all liquid electrolyte against the plates. So, no acid will spill even if the case gets damaged.

To maximize the nominal capacity of 110Ah, I suggest using the battery at 25 degrees Celsius. Meanwhile, the battery delivers up to 5,000 maximum amps.

The discharge temperature can range between 5 to 122 degrees Fahrenheit.

Since the XS-Power-D3100 has a sealed AGM mat design, its non-hazardous configurations guarantee durability and longer operation.

Subsequently, the battery comes vibration-resistant and ventless. This also means you can place the battery l in almost any position.

During my tests, I found it is important to keep the battery cool even when charging. The charging temperature should be between 32 to 104 degrees Fahrenheit.

When it comes to installation, note that the tightening torque must not exceed 8 feet-pounds on the battery.

I used automotive post adaptors, but you could also opt for screws and bolts.

Finally, this 12V deep cycle battery heavy has a reasonable weight. This unit is considered as one of the best racing batteries on the market.

Its technology provides more energy in a smaller space because each cell is compressed before insertion into the case.

Key Takeaways:

  • Carries a 60-day risk-free guarantee and a three-year warranty.

  • It has a reserve capacity of 237 minutes.

  • High energy density ensures powerful output.

  • Resists intense vibrations and extreme heat.

  • Simple installation and charging.

2. Best Lithium-Ion Deep Cycle Battery: Battle Born LiFePO4 12V Deep Cycle Battery

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The Battle Born LiFePO4 is one of the best RV deep cycle batteries because of its heavy-duty components and solid design that can save energy even in tough outdoor conditions.

Things We Like

  • Saves energy through its Battery Management System.
  • Protects itself against deep discharge, overcharging, and weather.
  • Lightweight and sleek design.

Things We Don’t Like

  • High price tag.
  • Excessive voltage damages the internal protective circuits.

This model is one of the best deep cycle lithium-ion batteries because of its modern design that combines excellent discharging, ruggedness, and reliability.

It delivers 3,000 to 5,000 repeated discharging capacity while still sustaining 80% of its energy capacity.

The unit is so versatile—its voltage can serve both solar energy applications and as a backup power source.

The good thing is that the battery does not need a floating stage for charging.

In case, you can connect the battery to shore power at a float voltage between 13.4 and 13.8.

What I like the most is that the battery’s ample constant output supplies power to your RV devices and electronics.

Regardless of the weather and outdoor situation, you can ensure a supply source of energy.

In fact, I was able to test two models along with solar panels. Using the Battle Born LiFePO4 12V Deep Cycle BatteryI powered a ventilation system, lights, water pump, and refrigerator.

Since it is a lithium-ion RV battery, the model can withstand repeated charging.

Besides, the impact-resistant design makes the battery tough against vibration, shocks, and spills. Subsequently, you can place the unit in any direction.

Aside from being maintenance-free, this unit has a Battery Management System.

Other energy-saving and safety features include high/low voltage protection, short circuit protection, high/low temperature, and automatic cell balancing.

Moreover, this deep cycle battery has a fast charging technology despite very little absorption time.

The fast charging, along with 100% non-toxic materials, makes it safe to install the battery.

You do not even have to worry about temperature compensation for charging.

This makes indoor installation convenient for the trailer’s weight.

Key Takeaways:

  • Boasts a 10-year warranty.

  • Handles numerous charging.

  • Discharges at a high current rate without losing Ah capacity.

  • Serves as energy storage for solar applications.

  • Sustains a charge for up to one year without a load.

3: Budget-Friendly Option: WindyNation 12V Deep Cycle Battery

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The WindyNation 12V Deep Cycle Battery is specifically designed for deep-cycle performance applications that need frequenting discharge and recharge for off-grid situations.

Things We Like

  • It comes with large reserve capacity.
  • Impressive deep cycle output in both discharging and recharging.
  • Resistant to vibrations and shocks.

Things We Don’t Like

  • Prone to breakage due to the brass materials in the core and threads.
  • Short hub terminals.

This model boasts a high reserve capacity of 100 amps per hour.

This enables the battery to maintain voltage for up to 240 minutes under a 25-amp discharge.

Since this is an AGM-sealed lead acid battery with heavy-duty plates, WindyNation BattaMax can handle deep and repetitive discharges.

On the other hand, the virgin lead keeps a low discharge rate while optimizing power storage.

The 99% pure lead content also means the lead floats inside while powering up the battery.

The surprising part—the battery’s float life is up to 12 years at 25 degrees Celsius.

I noticed that the battery will deliver less than the rated capacity if operated at temperatures below 77 degrees Fahrenheit.

You’ll get more than the rated capacity if you go beyond this temp, but the life expectancy diminishes.

If you want to further boost the capacity and system voltage, I suggest doing a series-parallel connection.

Like the rest of the best 12V deep cycle batteries for RV, this model is fully sealed.

Hence, there’s no way to spill or leak. You can also position the battery either upright or on its sides, but not upside down.

When it comes to construction, the ABS plastic material prevents the battery from emitting harmful substances or fumes.

Most importantly, maintenance is minimal. Aside from quick recharging, you can use this model for solar charging.

Key Takeaways:

  • It comes with a one-year warranty.

  • Durable ABS material that withstands bad weather.

  • Fully sealed and maintenance-free.

  • Suitable for parallel connection.

  • Fitted with heavy-duty plats for deep and repetitive discharges.

4: Premium Choice: Renogy 12V Lithium-Iron Phosphate Battery

The Renogy 12V Lithium-Iron Phosphate Battery is a lightweight, durable, and energy-efficient option for those who need to spend long days on the road.

Things We Like

  • Has a user-friendly LCD for output monitoring.
  • Low self-discharge that gives a longer shelf life.
  • Energy-efficient and spill-proof.

Things We Don’t Like

  • High price tag.
  • Not advisable to string this battery in a series.

In terms of capacity, this unit is rated 12 volts with 100 Amp-hours.

I observed that the battery does not drain below 20%. Yet, it can convert its 12V power to 85% capacity.

Aside from that, this model has a very low self-discharge of 3% a month.

Likewise, its 2000-cycle operation means a longer lifespan. As a result, it provides a better shelf life.

As for the operation’s temperature range, the recommended discharge temp is between -20 to 60 degrees Celsius.

Meanwhile, the charging temperature should be from 0 to 45 degrees Celsius.

What impresses me the most is the monitor that checks the amperage out of the battery bank.

An LCD screen even displays accurate readings of current, voltage, battery capacity, and consumed power.

When it comes to energy-saving, Renogy 12V Lithium-Iron Phosphate Battery has a built-in Battery Management System, which protects the battery’s performance.

The BMS balances the cells while protecting the battery against short-circuiting, over-discharging, over-charging, and over-current.

Similarly, its safety features are possible due to the fully-sealed lithium-iron phosphate cells.

The sturdy waterproof housing also prevents the battery from experiencing corrosion or leaking.

This lightweight unit houses these internal mechanisms and capacity at a 28-pound ABS casing. 

The compact design lets you install up to three batteries in a space allotted for massive traditional batteries.

For installation, let me remind you to tightly screw the battery terminals in. If you don’t, the loose terminals will generate heat and damage the battery.

Lastly, you can store this model for up to a year. Make sure that you place it in a space where the temperature ranges from 0 to 25 degrees Celsius.

Key Takeaways:

  • Comes with a five-year warranty.

  • Makes use of ABS+PC for housing.

  • Lightweight, sleek, and compact.

  • Comes with several safety features.

  • Expensive, but a great price for lithium-ion.

5: Best For Solar Charging: Universal Power Group UB121000 12V Deep Cycle Battery

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The AGM design of the Universal Power Group UB121000 12V Deep Cycle Battery delivers reliability even in tough environments while easily supporting your RVing needs.

Things We Like

  • Flexible, shock-proof, and spill-proof.
  • Runs up to 500 cycles.
  • Cyclic battery for solar charging.

Things We Don’t Like

  • Some users have reported a drop in voltage after a year of usage.
  • Poor customer service.

This model is recommendable for deep discharge situations. The nominal capacity is 100Ah, but this would still depend on the temperature, battery condition, and discharging current.

I suggest limiting the charging voltage around 13.6V to 13.8V. The recommended discharge temperature is between 5 to 113 degrees Fahrenheit.

Meanwhile, the charging temperature should be between 32 to 104 degrees Fahrenheit.

What’s also amazing is the individual stainless cell that makes the battery spill-proof in any mounting position.

This design also enables the model to withstand shocks and vibration.

During my trial, I was able to run a 150-watt television for up to six hours. The battery dropped from 12.8V to 12.6V only.

Even lights and radios turned on for a long time don’t seem to shake the voltage that much.

But I also noticed that even if this camper battery is rated 100Ah at 12V, it can only provide around 600 watts per day.

One of the things I like is its package that comes with bolts, nuts, and washers.

Attaching the cables using the cable terminals was also stress-free.

Even if the Universal Power Group UB121000 Deep Cycle Battery is bulky at 60 pounds, the price is an excellent value for an AGM deep cycle battery.

Don’t worry because you won’t have to add water. Since AGM 12V batteries are maintenance-free, the only thing you will have to remember is to charge.

You can preserve the battery in a cool environment, but the shelf life depends on the storage temperature.

When stored fully charged at 68 degrees Fahrenheit, you will still get a nominal charge of around 64% after one year.

Key Takeaways:

  • Lasts up to six hours per one full charge.

  • AGM design delivers excellent seep cycle output.

  • It comes with a one-year warranty.

  • Less than 3% per month standing self-discharge.

  • One-hour rating at 60Ah and 20-hour rating at 100Ah.

6: Perfect For Cold Environments: Optima Batteries 8016-103 D34M Deep Cycle Battery

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The Optima Batteries 8016-103 D34M Deep Cycle Battery is a maintenance-free power source to support plenty of onboard machines without the risk of cell damage.

Things We Like

  • Provides clean, strong, and safe power.
  • Higher and more consistent voltage under load.
  • Increased vibration-resistance for longer life.

Things We Don’t Like

  • Prone to overcharging.
  • Housing is prone to damage.

Optima has been a powerhouse in manufacturing batteries since the 1990s.

Even so, it specifically designed this model for RVs with extensive electronic systems without draining quickly.

Although the BlueTop starting battery is suitable for engine starting, you can use it as an auxiliary power source because of its SpiralCell Technology.

This feature includes two lead plates coated in lead oxide.

What’s more, this lightweight battery brags a high reserve capacity.

As a result, you obtain a long shelf-life and adequate supply of power regardless of the weather.

What I like the most are the unit’s 750-cold cranking amps.

This means you can rely on the battery to provide optimal power even in harsh environments, especially winter.

Aside from that, the Optima Batteries 8016-103 D34M Deep Cycle Battery can take in as much current as possible without overheating—making it one of the best deep cycle batteries around.

When it comes to durability, this 12V deep cycle battery is 15 times more resistant to vibration.

Its design can tolerate shocks without damaging the battery.

On top of that, this model is spill-proof and maintenance-free. Thus, you can place the battery in virtually any position.

Optima provides a digital charger, so that the charging process is more compatible with the battery’s specs.

For safety, make sure to charge the battery below 125 degrees Fahrenheit.

Key Takeaways:

  • Reserve capacity of two hours.

  • Uses polypropylene as case material.

  • Rapid charging technology.

  • Comes with a one-year warranty.

  • Works both as a starting and deep cycle battery.

7: Best For Sequencing: Renogy AGM 12V Deep Cycle Battery

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The Renogy AGM 12V Deep Cycle Battery is perfect for marine and off-grid usage because it can provide high currents on demand for long periods with very low self-discharge.

Things We Like

  • High capacity and high quality battery.
  • Features optimized capacity of instant high-current discharging.
  • It comes with a high performance corrosion-resistant alloy.

Things We Don’t Like

  • Heavy.
  • Some users received the package without stud bolts.

This deep cycle AGM battery is specifically designed for solar energy storage systems. You can rely on its high power capacity and long lifespan during long travels.

Ideally, use 200 watts of Renogy’s solar panels to store power. But if you don’t own a panel from Renogy, you can buy at least a 100-watt solar panel.

Although it has a nominal voltage of 12V, the capacity is rated 100Ah at a 10-hour rate to 10.8V at 25 degrees Celsius.

In terms of operating temperature, the discharge is ranging from 15 to 50 degrees Celsius. More than that, the 12V model is Renogy’s most powerful battery.

This unit has a very low self-discharge, the battery can sustain a charge for up to nine months.

I found that you can wire a few units together in a sequence to power an entire solar grid. With its capacity alone, I was able to run my refrigerator for over 18 hours.

It can even support lights, a modest air conditioner, and a television for hours.

Since this is an AGM type of battery, there’s no need to worry about maintenance. In fact, the battery is spill-proof.

The construction is also astounding. The fiberglass sheets protect this 12V deep cycle battery against vibration and shocks.

I also like the fact that charging is very simple. Make sure the charging temperature is from 0 to 40 degrees Celsius.

Even if the Renogy AGM 12V Deep Cycle Battery weighs 70 pounds, the string handle makes it easy to carry the battery around. The best part—you get all of these at an affordable price!

Key Takeaways:

  • Sealed and maintenance-free operation.

  • It comes with a two-year warranty.

  • Uses ABS as its container material.

  • Can survive 600 cycles at 80% depth of discharge.

  • No issues with charging and discharging.

8: Most Lightweight And Compact: Odyssey PC925 Battery

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The Odyssey PC925 Battery delivers long-lasting deep cycle cranking powerfor all your electrical needs regardless of the weather and situation.

Things We Like

  • Lightweight and compact at 26 pounds.
  • Provides both deep cycle and cranking power.
  • Non-spillable and vibration-resistant design.

Things We Don’t Like

  • Some users reported receiving the wrong cable thread size.
  • Could be too small for some RV configurations.

This RV deep cycle battery features AGM technology that gives engine cranking pulses over 2250A for five seconds.

Likewise, the design exhibits 400 cycles at 80% depth of discharge.

This model has a 70% longer cycle life compared to other units. Therefore, the battery can give a low rate, but long duration drains.

Consequently, it can provide a short duration of high amperage pulse.

The wonderful part is that the five-second cranking power is double to triple that of equally sized conventional batteries.

This is even if the temperature goes as low as 40 degrees Celsius.

Since the Odyssey PC925 Battery operates as a sealed battery, it recycles almost all gases internally under normal operating conditions.

In effect, it prevents corrosion of the positive terminal or corrosion to the surrounding area.

The non-spillable design equates to flexible mounting. In fact, you can install the unit in any direction, except inverted, without sacrificing output.

Because of the valve regulated design, you don’t have to fear acid burns or venting.

Moreover, the vibration-resistant design displays ruggedness and tolerance.

It protects the battery against mechanical vibration and high impact shock.

Even after a month of trial, it only took six hours for the battery to regain 100% charge.

Another good thing is that you can store the battery for up to two years at 77 degrees Fahrenheit.

Key Takeaways:

  • 400 cycles at 80% depth of discharge.

  • Has a reserve capacity of 52 minutes.

  • Comes with a four-year warranty.

  • Long life cycle.

  • Size fits right under the RV hood.

9: Best Ergonomics And Construction: VMAXTANKS VMAX V35-857 Deep Cycle Battery

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The VMAXTANKS VMAX V35-857 Deep Cycle Battery is an affordable, yet top-rated unit because of its high performance AGM technology that delivers lasting reliable power.

Things We Like

  • Durable and reliable design.
  • Estimated run time of up to nine hours depending on usage.
  • Features a metal carrying handle.

Things We Don’t Like

  • Needs a higher charging voltage.
  • Not suitable for starting.

This model’s plates boast a unique chemical and physical structure.

This design enables the battery to provide strength and high performance. Thus, you can rely on it as a primary or backup power.

The AGM absorbs the electrolyte, which protects the unit from spilling. Consequently, its design makes the battery resistant to vibrations and shocks.

When it comes to running time, low voltage operation can add four more hours to the battery life.

But even with a 35Ah capacity, you get a rated 12V power at discharging temperatures around 4 to 140 degrees Fahrenheit.

Furthermore, this unit features heavy-duty lead-tin alloys that give an extra margin of performance and service life in either float or cyclic applications.

The batteries are also thicker thanks to the metal plates. As a result, you get longer-lasting and higher quality batteries.

Even with these components, the model is compact and lightweight at 25 pounds.

As a full-time RVer, I appreciate the added touch of a standard carrying handle for mobility.

The VMAXTANKS VMAX V35-857 is also fitted with a tough outer casing made of strong ABS plastic.

The VMAX Tank seals the tightly packed plates, which makes the battery 100% maintenance-free.

It also drives the battery to recover even after repeated deep discharges.

When it comes to maintenance, there’s no need to add water to the tanks during float service life.

You don’t even have to check the electrolyte’s specific gravity.

If you have to charge this 12V deep cycle battery, make sure to keep the temperatures around 14 to 140 degrees Fahrenheit.

Key Takeaways:

  • Has an outstanding power despite its size.

  • Non-hazardous and non-spillable battery.

  • 400 cycles at 80% depth of discharge.

  • Comes with a one-year warranty.

  • A good upgrade from standard batteries.

Why You Should Trust This Review in 2023

When I first tried using a 12V battery, I had to spend hours and hours of researching; not to mention countless trials.

I want to make things simpler for you. Using my experiences, research, and tests, I’ve compiled reliable information to help you understand how the best RV deep cycle battery works.

Like you, I need to make sure that I’m investing my hard-earned money on the right RVing equipment.

What is an RV Deep Cycle Battery?

A 12V deep cycle battery is efficient power storage for full-time RVing. It serves as a power source to run onboard appliances and electronics. To be clear, RV batteries don’t produce power. They can simply store electric power.

In addition, it is designed to supply the rig with a consistent current that can last longer.

Deep cycle batts can store huge amounts of power, which enables them to run for long periods.

Hence, the best RV deep cycle battery must provide a steady amount of current over a long time.

It should be able to support basic equipment such as televisions, coffee machines, refrigerators, air conditioners, water pumps, microwave ovens.

Furthermore, it can discharge between 50% to 70% of its capacity. Deep cycle batteries for RVs come with thicker plates that have less surface area.

How Does a Deep Cycle RV Battery Run?

A camper battery needs repeated recharging and discharging.

When you need to charge the battery, its bank will collect energy to begin the cycle again. Yet, it requires less power, unlike a starting battery.

First, you must understand some voltage basics. A deep cycle battery runs at 12V direct current deep cycle electrical energy.

This energy can power up small systems and appliances inside your RV. Next, most of these batteries work on amp-hour. Therefore, they draw a single amp in 60 minutes.

However, there are different kinds of RV batteries. Each of them also works differently.

What are the Types of Deep Cycle RV Batteries?

Deep cycle batteries for RV have four kinds: Flooded Lead Acid, Absorbed Glass Mat, Gel Sealed, and Lithium-Ion. Each has advantages and drawbacks.

You must understand and compare the types of deep cycle batteries to see which one suits you best.

In a nutshell, FLA batteries are the most widely used batteries in RVs. Even though they need regular maintenance and a vented location, FLA batteries remain to be the most cost-efficient.

On the other hand, AGM batteries are for those who don’t want regular maintenance. Although they are tougher, they also tend to be pricier.

Meanwhile, deep-cycle gel batteries are the most expensive and have sensitive charging.

But this is a good pick if you want resistance against extreme vibrations and temperature.

Finally, a lithium-ion battery is lightweight but can deliver a continuous power supply and serve as good power storage.

Flooded Lead Acid Deep Cycle RV Batteries

Flooded lead-acid batteries contain electrolyte fluid, which allows the plates to be fully submerged. This is why it is also known as ‘wet cells’.

By discharging or taking electricity out of the battery, the plates change to lead sulfate and dilute the electrolyte.

Charging, or storing electricity into the battery, prompts the sulfate coating off the plates and back into the electrolyte.

Likewise, it releases hydrogen and oxygen gas. Also, water molecules in the electrolyte break apart from electrolysis.

Unlike AGM and gel batteries, vented wet cells let the gases escape into the atmosphere. Note that hydrogen is an explosive gas.

Thus, the compartment and battery boxes need vents, so the gas could escape. When it comes to power output, flooded lead-acid batteries average about 20% loss.

This means you can pull back 80 watt-hours back for every 100 watt-hours into the battery. The sad part is that FLA batteries don’t tolerate high amounts of vibration.

They also need regular maintenance by cleaning the terminals, equalizing charges, and distilled water filling.

It needs frequent cycling of discharging and recharging, as well as more water, during the hotter months.

Similarly, it requires off-season charging, which means it must be installed in an upright position. On the bright side, this type of deep cycle battery has hydrogen venting.

In effect, it can handle overcharging better than its AGM and gel counterparts.

Aside from that, it has the lowest cost per amp-hour. FLA batteries also cost cheaper than gel and AGM batts.

Absorbent Glass Mat Deep Cycle RV Batteries

An absorbent glass mat battery needs less maintenance.

The main drawback is that this is the most expensive RV deep cycle battery. Yet, it is tougher and stronger.

This is a type of lead-acid battery where a fiberglass mat absorbs the electrolyte. The mat increases the surface area to hold ample electrolytes on the cells.

It provides a discharge depth of 80% and a five times faster charging time.

Its internal resistance is lower than flooded cells. As a result, an AGM battery handles higher temperatures and self-discharges slower.

AGM batteries are more suitable for RVs with appliances or equipment that need larger power.

Good thing that this type is less prone to sulfation. You can use the unit again, even if the battery sits idle for a year, as long as you maintain it.

My favorite aspect is that you can install an AGM battery in any orientation and even at low temperatures.

Hence, this is a better type if you need to go to places with colder climates. Additionally, its sandwich construction makes it more vibration-resistant.

Unlike FLA models, AGM batts are sensitive to overcharging. AGM needs a higher voltage to charge.

However, AGM beats FLA in terms of ventilation. AGM batteries don’t emit gas or hydrogen during charging.

Having said that, you don’t need to worry about ventilation and safety.

Deep Cycle Gel RV Batteries

Gel batteries use jelled electrolytes to prevent them from spilling. Even if this type of battery uses fiberglass matting, you can mount it on its side.

Like FLA batteries, gel batts can easily transform. However, the gelled electrolyte is highly vicious.

What I don’t like about deep-cycle gel batteries is that the recombination of gases while charging happens at a slower rate.

Therefore, charging is much slower compared to FLA and AGM ones.

The good news is that gel batts do not need frequent maintenance. This type also lasts longer than AGM batteries.

Moreover, this battery type has narrow charging profiles. Charging it improperly or at a too high rate will cause gas pockets to form on the plates.

This will force the gelled electrolyte away from the plates, decreasing the battery’s capacity.

If you don’t have much experience with handling batteries and chargers, then deep-cycle gel batteries are not good for you.  This is also the most expensive deep cycle battery around.

But if you value toughness against extreme vibrations and temperatures, then you might want to consider this type.

Finally, gel deep cycle batteries and solar power applications are good pairings.

Lithium-Ion Deep Cycle RV Batteries

In some aspects, lithium-ion batteries outperform other battery types.

First, let’s understand how it works. Using nano-scale phosphate cathode material, lithium-ion batts provide good electrochemical performance with low resistance.

In effect, it has good thermal stability, a high current rating, and a long life cycle.

Lithium-ion batteries are a popular power source for most outdoor tools because of their lightweight design.

It can perform well in extreme cold and heat. Even so, it can operate safely up to 149 degrees Fahrenheit.

Since it has a versatile mounting, you can install the battery in any direction without sacrificing energy flow.

Lithium-ion deep cycle batteries tend to be pricey, but you will save up more in the long run due to their efficiency.

For comparison, check out this table

FLA Deep Cycle Battery

AGM Deep Cycle Battery

Gel Deep Cycle Battery

Lithium-Ion Deep Cycle Battery

Needs venting

No venting

No venting

No venting

Don’t tolerate high amounts of vibration

More vibration-resistant

Can resist extreme temperatures and vibrations

Resistant to extreme temperatures, vibrations, and shock

Need regular maintenance


Does not need frequent maintenance

Little to no maintenance

Installed in an upright position

Can be installed in any direction

Can be installed in any direction

Versatile mounting in any direction

Low cost

Higher price tag

Most expensive


All of the products here are guaranteed to be safe, long-lasting, durable, eco-friendly, and powerful.

Picture this—a car battery will provide a burst of energy for a short time.

Whereas, the best 12V deep cycle battery for RVs delivers a steady rate of power over a long time.

For this list, I’ve only included two lithium-ion models: Battle Born LiFePO4 12V Deep Cycle Battery and Renogy 12V Lithium-Iron Phosphate Battery. The rest of the units are AGM units.

Why didn’t I pick gel and FLA batteries? Well, gel deep cycle batteries are expensive. Also, some AGM and lithium-ion units are far more impressive, yet affordable. FLA models, although very budget-friendly, require venting. Adding vents could mean more expenses.

Comparison Guide: How We Picked the Best All-in-One Deep Cycle Battery

After knowing the types of 12V deep cycle batteries, now’s the time to understand the essential features.

Check whether your chosen battery comes with the following features:


You can measure a deep cycle battery’s capacity by the rating of Ah or Ampere hours. This implies the amount of current a battery can provide in a certain period.

For example, a deep cycle battery with a 100Ah capacity can deliver 100 Amperes for 60 minutes. The higher the capacity, the more and longer the battery can store and release power.

Compute your energy requirements when determining the ideal capacity of your deep cycle battery. Identify the amount of power you consume each day.

Based on experience, the best 12V deep cycle battery can deliver power without going down to 50% of its total capacity.

If you are going to a place where there is no chance to recharge, opt for a deep cycle battery that can provide power without depleting.

Most of the models here are rated 100Ah. Being our best RV deep cycle battery, the XS-Power-D3100 brags a 110Ah capacity.

The Universal Power Group UB121000 12V Deep Cycle Battery and Renogy AGM 12V Deep Cycle Battery also come with good capacities.

Should I Worry About Size and Weight?

The size and weight of a battery impact the performance. The capacity determines the battery’s size and weight. Thus, make sure you have enough space for the battery.

Heavy-duty 12V deep cycle batteries normally weigh up to 2,000 pounds. Although this could store a lot of power, its weight may not be suitable for your RV.

Aim for having the right balance between size and weight. But careful not to sacrifice power output.

The VMAXTANKS VMAX V35-857 12V Deep Cycle Battery is the most lightweight at 24 pounds. The Odyssey PC925 Battery is also lightweight at 26 pounds.

However, their small size is because they have a smaller capacity and low life cycles.

The XS-Power-D3100, Renogy AGM 12V Deep Cycle Battery and WindyNation BattaMax 12V Deep Cycle Battery are the three heaviest units, but they have way more powerful energy outputs.

Power at Low and High Temperatures

A good 12V deep cycle battery must supply power at low and high temperatures.

When you are in a humid or hot location, a battery must function properly even if it is 35 degrees Fahrenheit outside.

Likewise, your model must survive even at the lowest temperature. Deep cycles batteries are designed to withstand extreme temperatures.

For instance, the VMAXTANKS VMAX V35-857 12V Deep Cycle Battery has a discharge temperature of 4 to 104 degrees Fahrenheit.

Why is Cranking Ampere Important?

For full-time RVing, you’ll go to lots of places with different temperatures.

The cranking ampere indicates the power supply from a battery when it runs in environments with around 35-degree Fahrenheit temperatures.

In this way, you will get an idea about the possible output of a deep cycle battery when you use it in temperatures above water’s freezing point.

If your chosen model has a high cranking ampere rating, you also get an impressive starting performance.

The Odyssey PC925 Battery has the best cranking ampere, which is even better than traditional batteries.

What About Cold Cranking Ampere?

The cold-cranking ampere implies the power supply in case the starting motor gets power from locations with less than 0-degree Fahrenheit temperatures.

The best RV deep cycle battery must have a high cold cranking ampere, so it has ample power to start devices even in cold temperatures.

Low temperatures can impact the capacity of a 12V deep cycle battery. Hence, you have to consider the cold cranking ampere, especially during the winter months.

The Optima Batteries 8016-103 D34M Deep Cycle Battery performs best when it comes to cold cranking and protection against cold temperatures.


Aside from the amp-hour capacity, the voltage of a deep cycle battery is another good indicator.

Voltage equates to the potential electrical difference. Deep cycle ones usually have 12 volts of direct current power.

Discharge Depth

The best 12V deep cycle battery must have a good discharge depth, which optimizes a unit’s life cycle.

The depth of discharge shows in percentage the particular amount of power a battery discharges.

What About Life Cycles and How Is It Connected to Discharge Depth and Charging?

You can measure a battery’s cycle life using the discharge cycles it can deliver based on a certain percentage of its rated capacity.

Life cycles differ from model to model. Factors such as components, design, and quality control affect life cycles.

Deeper individual cycles mean fewer cycles. Therefore, the best 12V deep cycle battery must have a discharge depth that can maximize its life cycle.

The Battle Born LiFePO4 12V Deep Cycle Battery shines because of its 3000-cycle capacity.

The Renogy AGM 12V Deep Cycle Battery follows with 600 cycles at 80% depth of discharge.

Meanwhile, both the VMAXTANKS VMAX V35-857 12V Deep Cycle Battery and Odyssey PC925 Battery manage 400 cycles at 80% depth of discharge.

Vibration and Shock Resistance

The best deep cycle battery for RVs must perform well amidst shock and vibrations in the rig.

A model with sturdy housing can withstand the toughest outdoor conditions.

More than that, a durable design should allow you to mount the battery in any position without spills or leaks.

All models here can resist vibration and shocks. Among those with added safety features include XS-Power-D3100, Renogy 12V Lithium-Iron Phosphate Battery, and VMAXTANKS VMAX V35-857 12V Deep Cycle Battery.

Cost and Warranty

The most affordable deep cycle batteries have an upfront cost of around $100. Meanwhile, the premium models can hit as high as $1,000.

In any case, what you have to consider is the operational cost.

If you have a durable and sturdy model, chances are that you won’t even have to use the warranty.

As mentioned earlier, the best camper battery must be resistant to vibration and shocks.

Its performance should not fluctuate at different temperatures. In this way, you can prevent spending on repairs.

Frequently Asked Questions About the Best Travel Trailer Batteries

How to Install the Best Deep Cycle Battery for RV?

For starters, make sure to turn off appliances and tools that consume power.

Then, check the battery’s position relative to the polarity. If you have an old battery, disconnect the negative cables first before removing it.

Check whether there is corrosion on the carrier and hold down hardware.

Clean these parts before placing the new battery. Only then can you link the battery to the cables.

How to Charge a 12V Deep Cycle Battery?

Charging is essential, so you could store power again. You can do this in several ways, but the most common include using a battery charger, converter charger, smart charger, solar panel, and generator.

Battery Charger

Battery chargers are imperative if you have things to, well, charge. Ensure the charger is appropriate to your battery type.

Converter Charger

Converter chargers can convert 120V shore power into 12V DC power. Typically, 12V DC systems are designed to run between 10.5V to 15V.

However, a converter charges batteries at three to five amps. This means it could take several hours to complete the charging.

Charging A Deep Cycle Battery Using a Smart Charger

A smart charger is one of the fastest and accurate ways to charge an RV battery.

It makes use of computer-generated algorithms or charging profiles based on your battery’s type of charge.

This means a smart charger gathers data from the battery. Then, it will use this information to change the charge current and voltage.

In addition, a charger controller can recharge a battery efficiently. It can also modify the voltage and current to avoid damaging your battery.

Can I Use a Solar Panel to Charge an RV Battery?

Yes, you can charge a deep cycle battery using a solar panel. Yet, you have to consider some things.

First, identify how long it takes to charge a 12V battery. Also, know the perfect wattage for the solar charger.

Some solar panels have built-in controllers that block the charge if the charging is complete.

Meanwhile, other panels feature LEDs to show whether or not your battery is charging.

All things considered, solar panels are good sources of power because they can produce up to 100% of the watt output.

Charging Deep Cycle Batteries Using a Generator

For RVers, a generator is a must-have. It provides lots of energy to power up your devices. What’s more, this is the fastest way to charge a deep cycle battery.

In the case of charging an RV battery, fully charge the generator first. You could also plug the generator into an AC outlet.

For safety, turn off your RV, unplug all electronics, and engage the emergency brake to prevent mishaps. Also, make sure the battery has no cracks, bulging, or corrosion.

Use a wrench to attach the positive cable (red) to the negative cable (black).

It might take up to 120 minutes to fully charge the battery. If the generator is depleted, it could take longer than that.

Whatever method of charging you choose, consult the user manual to know how long you should charge the battery.

The charging time may depend on the source and weather. Even so, avoid overcharging the battery to prevent damage.

Can I Charge an RV battery While Driving?

Yes, you can a deep cycle battery while driving. You simply have to plug it into your vehicle.

Most vehicles have a 120V AC outlet. Since you have a 12V battery, you have to use a power converter to get 12V DC power and avoid electrical issues.

How Long Does a 12V Deep Cycle Battery Last?

In general, a well-maintained battery can last for up to five years. However, different types of batteries equate to different lifespans.

Your usage and maintenance could also impact the battery’s longevity. This leads us to the question…

How to Clean and Maintain a Deep Cycle Camper Battery?

When replacing the battery, make sure to remove the negative cable first.

On the other hand, rewire the positive cable first when you have to reconnect the battery. Make it a habit to check the electrolyte level of the battery.

A low level of electrolyte will cause a battery to fail. But you also have to avoid overfilling it.

In terms of charging, it’s better to charge the battery if it is at least 50% drained. Also, charge the batteries with their recommended voltages.

Lastly, do not store the battery discharged to prevent the plates from crystallizing or hardening. If this happens, the battery will find it difficult to generate power.

Safety Precautions and Reminders:

  • Don’t let smoke or spark get near the battery.

  • Keep tools or other metal objects away from the battery terminals.

  • Wear protective clothing when installing a battery.

  • Do not overcharge the battery.

  • Do not remove a sealed battery’s vent caps.

  • Store batteries in a dry, clean, and well-ventilated place.

  • Ambient temperature during storage causes a quicker self-discharge rate.

Wrapping Up

Make sure to pick a model that would best suit your rig’s power requirements.

There are several factors to consider when choosing an RV battery: reserve capacity, discharging, charging, resistance to vibration and shocks, and price.

Review the information from our product review and then weigh those against our rating system.

I’m sure you will pinpoint the best RV deep cycle battery. With your informed decision, you don’t have to suffer running out of power while on the road.