Best 12 Volt RV Lithium Battery Reviews 2021 + How To Charge

Why Should I Get A Lithium Battery For My RV?

If you’ve been researching RV batteries you’ve probably heard a bit about lithium ion batteries and how amazing they are for RV use. A few of their amazing benefits include longer life, lighter weight, faster charging, safer overall, and in many cases a built in battery management systems that will protect your new RV lithium batteries from common causes of damage.

If you boondock/dry camp a lot or want RV batteries that will last for years and years then switching to lithium ion is a good idea. Lithium batteries are commonly used in large RV solar set-ups and even in off-grid homes. You don’t have to use solar panels with them but adding a few panels can be a good idea.

For More Deep Cycle RV Battery Options That Aren’t Lithium-Ion See Also: Best Deep Cycle RV Batteries (AGM, SLA, 12V, 6V)

Companies are coming out with new lithium batteries every year and it can be hard to find the kind that is perfect for RV use. One thing you should always look for is the 12 volt ones because all RV electrical systems run off of 12V power.

You can easily wire 12V lithium RV batteries in parallel to add more amp hours to your RV battery set-up but many lithium batteries cannot be wired in series to increase the voltage which means 6 volt lithium batteries aren’t the best way to go.

See Also: How To Wire Multiple 12V Or 6V Batteries To An RV

In this article, I’ll compare and review some of the best 12 volt RV lithium batteries and talk about what kind of RV charger/converters you are going to need to keep them healthy and charging the right way.

Best Overall
Battle Born LiFePO4 Deep Cycle Battery - 100Ah 12v with Built-in BMS - 3000-5000 Deep Cycle Rechargeable Battery - Perfect for RV/Camper, Marine, Overland/Van, and Off Grid Applications
Renogy Li 12V 100Ah Smart Lithium Iron Phosphate Battery
Most Lightweight
ExpertPower 12V 100Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2500-7000 Life Cycles & 10-Year lifetime | Built-in BMS | Perfect for RV, Solar, Marine, Overland, Off-Grid Applications
RELiON RB100 LiFePO4 100A 12 Volt Lithium Iron Phosphate Deep Cycle Battery
Basic Option
Ampere Time 12V 100Ah 1.28KWh Lithium|LiFePO4| Deep Cycle, Rechargeable Battery, Built-in 100A BMS,280A Max, 4000~8000 Cycles, Perfect for RV/Camping, Solar Home, Off-Grid Applications.
Voltage
12
12
12
12
12
Amp Hours
100
100
100
100
100
Weight
31 lbs
26 lbs
22.6 lbs
30 lbs
25.4 lbs
Built In BMS
Temperature Protection
Parallel Compatible
Series Compatible

Best Overall

Battle Born LiFePO4 Deep Cycle Battery - 100Ah 12v with Built-in BMS - 3000-5000 Deep Cycle Rechargeable Battery - Perfect for RV/Camper, Marine, Overland/Van, and Off Grid Applications
Voltage
12
Amp Hours
100
Weight
31 lbs
Built In BMS
Temperature Protection
Parallel Compatible
Series Compatible
Renogy Li 12V 100Ah Smart Lithium Iron Phosphate Battery
Voltage
12
Amp Hours
100
Weight
26 lbs
Built In BMS
Temperature Protection
Parallel Compatible
Series Compatible

Most Lightweight

ExpertPower 12V 100Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2500-7000 Life Cycles & 10-Year lifetime | Built-in BMS | Perfect for RV, Solar, Marine, Overland, Off-Grid Applications
Voltage
12
Amp Hours
100
Weight
22.6 lbs
Built In BMS
Temperature Protection
Parallel Compatible
Series Compatible
RELiON RB100 LiFePO4 100A 12 Volt Lithium Iron Phosphate Deep Cycle Battery
Voltage
12
Amp Hours
100
Weight
30 lbs
Built In BMS
Temperature Protection
Parallel Compatible
Series Compatible

Basic Option

Ampere Time 12V 100Ah 1.28KWh Lithium|LiFePO4| Deep Cycle, Rechargeable Battery, Built-in 100A BMS,280A Max, 4000~8000 Cycles, Perfect for RV/Camping, Solar Home, Off-Grid Applications.
Voltage
12
Amp Hours
100
Weight
25.4 lbs
Built In BMS
Temperature Protection
Parallel Compatible
Series Compatible

Note: Scroll left/right on small screens to view all products in the table.

Best 12 Volt RV Lithium Battery Reviews


1. Battle Born LiFePO4 Deep Cycle Lithium Battery

Battle Born LiFePO4 Deep Cycle Battery - 100Ah 12v with Built-in BMS - 3000-5000 Deep Cycle Rechargeable Battery - Perfect for RV/Camper, Marine, Overland/Van, and Off Grid Applications

Check Price at Amazon

Battle Born is an American company based out of Nevada, the battle born state. They are known for their expertise and quality in their lithium batteries.

The Battle Born 100 amp hour 12-volt LiFePO4 battery is one of the best lithium batteries you can get for RVs and even solar set-ups. Much like other lithium batteries the Battle Born is lightweight weighing only 31 lbs and can be mounted in any position.

The thing that makes lithium batteries so great for RV use, besides the lightweight, is the number of times they can be charged and discharged without being damaged.

Battle Born advertises its 12 volt lithium batteries to be a 3,000-5,000 cycle. That means they will last much longer than regular lead-acid ones which usually have a life cycle of 200-300.

Battle Born uses an intelligent BMS (Battery Management System) that protects its lithium batteries from common battery failure causes like temperature (will not charge when frozen or too hot) and ground faults.

The system can control how much power is being drawn from the cells and act as an emergency shut off just in case something goes wrong.

Battle Born LiFePO4 Deep Cycle Battery - 100Ah 12v with Built-in BMS - 3000-5000 Deep Cycle Rechargeable Battery - Perfect for RV/Camper, Marine, Overland/Van, and Off Grid Applications

Lots of companies have built-in BMS on their lithium batteries but not all of them work as advertised. Battle Born is one of those companies you can rely on. Because of their high-quality BMS system, you can even say that their lithium batteries are safer than traditional lead-acid ones.

The battery is about the same size as a traditional deep cycle RV battery measuring only 12.8 inches long, 6.9 inches wide, and 9 inches tall. If you already have battery boxes in your RV or trailer it may already fit.

If not the Battle Born deep cycle lithium iron phosphate battery is compatible with this group 27 NOCO battery box (click to view on Amazon).

See Also: What Will The RV Battery Run?

The Battle Born LiFePO4 Deep Cycle Lithium Battery is perfect for RV use and one of the best quality lithium batteries on the market today.

Battle Born even has the longest warranty (10 years). You can connect these batteries in parallel or even in series if you need more voltage for a solar set-up which is an uncommon ability for a 12 volt lithium battery.

I always suggest getting a lithium RV converter charger when switching your RV batteries from lead-acid to lithium but Battle Born says their lithium batteries can be charged by 3 stage chargers so long as the bulk charge is between 14.2V-14.6V and the float charge is 13.6V or lower.

As a reference, my 2013 Prowler has a WFCO 3 stage charger that bulk charges at 14.4V and float charges at 13.6V. According to Battle Born, it is technically compatible. But if you want your new RV lithium battery to last I would suggest getting a lithium converter charger like this one (click to view on Amazon).

Pros

  • Dependable Company
  • Lightweight
  • Long-Lasting
  • Can Be Mounted In Any Position
  • Can Connect In Series Or Parallel
  • High-Quality BMS
  • Can Be Charged With Certain 3-Stage RV Converter Charger
  • 10 Year Warranty
  • Low Temperature Cut Off

Cons

  • Very Premium Option

2. Renogy Lithium 12V Smart Battery

Renogy Li 12V 100Ah Smart Lithium Iron Phosphate Battery

Check Price at Amazon

Renogy is another big name in the world of lithium batteries and solar energy. They make a lot of great solar panels and its 12 volt RV lithium battery has some excellent features and is a great choice for campers and solar set ups.

The Smart Lithium Iron Phosphate 12 volt 100 amp hour battery has a lifespan of more than 2,000 cycles.

The built in BMS (battery management system) offers protection from over-charging, over-discharging, over-current, short-circuiting, and temperature protection (will not charge when frozen).

Even though it has a high 100ah capacity Renogy’s lithium battery is much lighter than others weighing only 26 lbs. It also measures only 11.38 inches long, 6.77 inches wide, and 7.38 inches tall. Chances are it’s going to fit in most battery boxes or RV storage areas with room to spare.

One downside to this lithium RV battery is it cannot be connected in series only in parallel. For RV use this isn’t a huge deal and it’s very common for lithium batteries to not be compatible with series connections.

But if you are planning on using these batteries for an off-grid solar set up in a home you will not be able to increase the voltage.

Renogy Li 12V 100Ah Smart Lithium Iron Phosphate Battery

Renogy has a past of sending out batteries that were more discharged than people would like so to combat this they ship this battery in “shelf mode” to stop it from discharging. If you get this battery you will need to plug in the included activation switch which is basically just a button on the end of a cable. This will take the battery out of shelf mode.

The company doesn’t say anything specifically about being able to charge this lithium battery with a regular RV 3-stage converter charger but much like the Battle Born lithium batteries, it is technically possible.

It could potentially shorten the life of the battery and it’s possible that the battery won’t get fully charged by the RV’s converter.

See Also: How Long Will An RV Battery Run The Furnace? + Calculations

I recommend getting a lithium converter charger like this one (click to view on Amazon) for your RV when switching to lithium batteries but one of the downsides to changing the converter is your RV will no longer be compatible with lead-acid batteries. It’s something to think about before making the switch.

The Renogy Lithium 12V Smart Battery is a fantastic choice and proof that Renogy is working every day to make some of the best batteries possible for RVs, boats, and solar banks.

It’s an excellent choice for campers and a great contender to the Battle Born lithium batteries.

Pros

  • Dependable Company
  • Very Lightweight
  • Can Be Mounted In Any Position
  • Can Connect In Parallel
  • High-Quality BMS
  • 5 Year Warranty
  • Low Temperature Cut Off

Cons

  • Cannot Be Connected In Series (not a big deal for RV use)
  • May Need To Swap Out Converer In RV To Fully Charge

3. ExpertPower 12V Lithium Deep Cycle Battery

ExpertPower 12V 100Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2500-7000 Life Cycles & 10-Year lifetime | Built-in BMS | Perfect for RV, Solar, Marine, Overland, Off-Grid Applications

Check Price at Amazon

ExpertPower is a new up and coming battery maker that has recently started making 12V lithium batteries for RV, solar, and marine use. The 100ah deep cycle battery has an advertized life of 2,500-7,000 cycles.

It’s fairly lightweight weighing only 22.6 lbs and measures 13 inches long, 6.8 inches wide, and 8.4 inches tall. It’s a little longer than other RV lithium batteries but it should still fit in a group 27 or higher battery box.

The built in battery management system protects from overcharging, overloading, overheating, and short-circuiting. One downside to this battery is it doesn’t have a built in low temperature cut off like the Battle Born and Renogy lithium batteries.

See Also: Is The Jackery SolarSaga 100W Solar Panel Worth It?

ExpertPower recommends only using their lithium battery in temperatures greater than 32°F (0°C) or making sure to use the battery with a solar charger that has a low temperature cut off or an external one like the Victron Smart Battery Sense (click to view on Amazon).

Much like other lithium batteries, the ExpertPower is not recommended to be connected in series and you can only connect up to 4 in parallel.

ExpertPower doesn’t recommend you use a regular 3 stage charger for its lithium batteries. According to them in order to get the full benefits of their lithium batteries you need to use a lithium battery charger.

Replacing the current charger/converter in your RV with one like this (click to view on Amazon) will keep your lithium batteries healthy and working right.

The ExpertPower 12V Lithium Deep Cycle Battery is a more basic choice for RV use and while it doesn’t have all of the safety features of other RV lithium batteries it’s still an excellent choice.

If you live or camp in areas where the temperature gets to freezing you will want to get a low temperature cut off sensor like the ones I linked to earlier in this review.

Pros

  • Built In BMS
  • Lightweight
  • Fits In Group 27 Battery Box
  • Can Be Connected In Parallel
  • Can Be Mounted In Any Position

Cons

  • Cannot Be Connected In Series (not a big deal for RV use)
  • May Need To Swap Out Converter In RV To Fully Charge
  • No Low-Temperature Cut Off
  • 1 Year Warranty
  • Can Only Connect Up To 4 In Parallel

4. Relion RB100 LiFePO4 12V Lithium Battery

RELiON RB100 LiFePO4 100A 12 Volt Lithium Iron Phosphate Deep Cycle Battery

Check Price at Amazon

Relion is another popular battery company that makes a great 12V lithium battery for RV and solar use. The 100ah version weighs 30 lbs and is 13 inches long, 6.8 inches wide, and 8.8 inches tall. It should fit easily in a group 27 or larger battery box.

The Relion RB100 is one of its most popular batteries and while it does have a built in BMS that offers the standard protections from things like overcharging and other things it does not seem to have much protection against low temperatures which is kind of a big deal if you plan on camping in cold weather.

For more protection I recommend adding a low temperature cut off like the Victron Smart Battery Sense (click to view on Amazon).

Lithium batteries can be irreversibly damaged when charged in below freezing temperatures. That’s why it’s recommended to use them in a temperature controlled room or box and to always make sure the low temperature cut off is working.

See Also: Best Portable Solar Panel Charger For RV Camper/Boondocking

Much like other lithium batteries the Relion RB 100 is advertised to be durable, long lasting, and perfect for RV use. It comes with a 5 year warranty and according to Relion should be compatible with standard 3 stage RV converter chargers.

The Relion RB100 LiFePO4 12V Lithium Battery doesn’t offer as many specs as other brands but it’s still a great 12 volt lithium battery made by a reputable company.

For RV use this is a great choice and these batteries can be wired safely in series and parallel if you are making a solar power bank or looking to add multiple batteries to your RV.

Pros

  • Lightweight
  • Can Be Mounted In Any Position
  • Can Connect In Parallel & Series
  • 5 Year Warranty
  • Built In BMS
  • Fits In Group 27 Battery Box

Cons

  • No Low-Temperature Cut Off

5. Ampere Time 12V 100Ah Lithium Battery

Ampere Time 12V 100Ah 1.28KWh Lithium|LiFePO4| Deep Cycle, Rechargeable Battery, Built-in 100A BMS,280A Max, 4000~8000 Cycles, Perfect for RV/Camping, Solar Home, Off-Grid Applications.

Check Price at Amazon

Ampere Time’s 12 volt deep cycle lithium battery is a fairly new battery that is great for using in an RV or solar set up so long as you store it in a place where the temperature doesn’t get too low.

Like some of the other RV lithium batteries in this review, the Ampere Time does not have a decent low temperature shut off sensor which is a hugely important component of a proper BMS.

Even if you don’t plan on ever being in cold weather I highly recommend getting a separate low temperature sensor like the Victron Smart Battery Sense (click to view on Amazon) just in case. It’s not only good for sensing cold temperatures and alerting you when conditions are dangerous for charging, but it will also tell you the voltage of your RV batteries wirelessly via Bluetooth.

This version of the 12 volt Ampere Time has 100ah which is a popular size for RV use since it will fit in a group 27 battery box. It measures 13 inches long, 6.82 inches wide, and 8.48 inches tall. It weighs 25.4 lbs.

See Also: Best Remote Start Generators – Portable & Inverter

If you don’t mind a larger and heavier RV lithium battery there is also a 200ah and 300ah version available.

It’s a well built battery even though it’s still at a very basic price range. The advertised life is 4,000 to 8,000 cycles which is perfect for regular use in an RV or boat.

Even though the low temperature sensor is bad on the Ampere Time the rest of the BMS system works. It will protect against high temperatures overcharge, over-discharge, overcurrent, and short circuits.

For larger voltage needs and increasing amp hour storage capacity, these RV lithium batteries can be wired in both series (up to 4 batteries to 48V) and parallel.

The Ampere Time 12V 100Ah Lithium Battery is another fantastic basic option for an RV or solar set up. I like that it can be wired in parallel and series and even though the BMS could be better the build of the lithium battery is solid and with the minor addition of an exterior cold temperature sensor, it should keep your camper running for years to come.

Pros

  • Lightweight
  • Can Be Mounted In Any Position
  • Can Connect In Parallel & Series
  • 5 Year Warranty
  • Built In BMS
  • Fits In Group 27 Battery Box

Cons

  • No Low-Temperature Cut Off

What To Look For In An RV Lithium Battery

Size & Weight

Lithium batteries are much lighter than regular lead-acid deep cycle batteries. In fact, many are 1/3 the weight, which is a huge selling point for RVers. We need to save on weight as much as possible so we have space for other necessities like food and water.

One thing to look out for is the size of the battery. Even though they weigh less 12 volt lithium batteries are not smaller in size. They start to get especially large when the amp hours go above 100.

Make sure you measure the space you have set aside for your RV battery bank before purchasing to make sure everything will fit.

Parallel & Series Capabilities

100 amp hours is more power than most weekend RVers use but many full-time RVers who rarely camp connected to power want more than that.

One way to increase battery bank capacity is to wire 12V batteries together in parallel. All of the RV lithium batteries in this review are parallel wire compatible but not all are capable of wiring in series. Wiring batteries in series is a way to increase the voltage which isn’t necessary for 12 volt batteries and RV use.

If you are looking at other brands of deep cycle 12v lithium batteries make sure you check if they are parallel compatible or not.

BMS (Battery Management System) & Cold Temp Protection

The battery management systems are a big reason lithium batteries are safe and last for a long time. They keep the batteries from charging in damaging conditions like too cold or hot weather and more.

One of the most common problems with many RV lithium battery BMS systems is the cold temperature shut off. Trying to charge lithium batteries in freezing temperatures can damage them, that’s why it’s important to have protection in place to stop it from happening.

Many companies advertise a BMS with a low temp shut off but after some simple testing, some RVers have found that with some companies this safety system is lacking.

One way to combat this is to get a Victron Smart Battery Sense (click to view on Amazon) that will help you monitor the temperature of the battery and alarm you when conditions are no longer safe for charging.


solar panels outside of a travel trailer charging an RV lithium battery
RV lithium batteries are great for camper solar set ups and can be charged quickly with lots of panels.

Conclusion & My Recommendations For Best RV Lithium Battery

Lithium batteries are changing the game for RVers. You can now have even more stored power at a lower weight and a longer lasting set up.

Many campers are now building large battery banks that are hooked up to inverters that turn the 12 volt DC power into 12oV AC power so you can use the outlets inside the RV. These banks are often charged by solar panels which are much quieter than traditional gas generators.

Adding lithium batteries to your RV is a fantastic way to make camping more comfortable and the life of the batteries is much longer than lead acid ones which means you will actually end up saving in the long run.

All of the RV lithium batteries in this review are 100ah but many of the companies make larger versions with more storage power. The main difference between them all is the quality of BMS and the company itself. There are some great basic options and some amazing premium batteries with superior protections against things like low temperature.

Here are some of my recommendations to help you decide on which kind of RV lithium battery is best for you.

Best Overall – Battle Born LiFePO4 Deep Cycle Lithium Battery

There are some amazing lithium batteries in this review and any one of them is going to be a great option for RV use but my choice is the 12V Battle Born Deep Cycle Lithium Battery.

Battle Born knows what it’s doing when it comes to lithium batteries and you get some serious quality when you go with them. They are an American based company known for its great service and fantastic warranties.

The built in battery management system is reliable, has a cold temperature cut off, and its technology will keep the battery healthy longer.

Battle Born also says it’s ok to wire this lithium battery in series which is pretty uncommon for these kinds of batteries and you can also wire them in parallel which is important for RV use since you may want to add more amp hours without changing the voltage.

Another thing that makes this lithium battery so great for RV use is its outstanding terminal durability. Some brands have trouble with their terminals being easy to break but Battle Born has added some beefy terminals you most likely won’t be able to break.

For RV use you want a lithium battery that’s durable, lightweight, maintenance-free, and worth it in the long run. Battle Born’s lithium battery has all of these characteristics and then some making it my top choice for the best RV lithium battery.

Most Lightweight – ExpertPower 12V Lithium Deep Cycle Battery

If you are looking to save on weight, which is something most RVers are trying to do, the ExpertPower 100ah 12 volt lithium batteries are the lightest in this review.

You can combine up to 4 of them in parallel for 400ah and a total battery bank weight of 90.4 lbs.

They also make a 200ah version that is 48.3 lbs. The main downside to the 200ah version is its large body that measures 20.6 inches long, 8.6 inches wide, and 10.4 inches tall. With such a long body it might be hard to find space for it in an RV, van, or trailer.

Best Basic Option – Ampere Time 12V 100Ah Lithium Battery

Sometimes you just need a good old fashioned RV lithium battery to keep your 12V appliances going while camping and the Ampere Time is great for that.

It’s on the lower end as far as a BMS system since there is currently no working cold temperature shut off. But surprisingly enough Ampere Time does say you can wire their 12V 100ah batteries in both series or parallel with a max of 4.

The cells themselves are put together well and the box is heavy duty which is what you want for RV use and camping.

If you aren’t looking for anything fancy these RV lithium batteries are a great choice.


Frequently Asked Questions About RV Lithium Batteries

Do RV lithium batteries charge faster than lead acid?

Yes, lithium batteries, in general, need to charge at a higher voltage longer than lead-acid and for the most part, will charge faster than lead-acid when connected to the correct charger.

Are lithium RV batteries worth it?

If you boondock/dry camp more than you camp with electrical hookups or live in your RV full-time, lithium batteries can be more worth it than lead-acid in the long run.

They last longer, are lighter, safer, can be mounted in any position, and a quality lithium battery will have a built in battery management system that will protect it from things and conditions that may damage it.

The other thing that makes lithium batteries more worth it for RVers is you can discharge them as low as 20% without damaging them. Lead-acid will start to take damage at 50% discharge which means if you have high power needs you will have to add more lead-acid batteries than lithium ones to get the same amount of power before damaging the batteries.

Will lithium RV batteries explode?

Lithium batteries do have a bad reputation for exploding and you certainly increase the risk for problems when you don’t get a battery with a good BMS (battery management system). All of the batteries on this list have a BMS that is put in place to stop the things that may cause explosions.

Short-circuiting and overheating are two factors that contribute to explosions and a good BMS should be able to stop the battery from getting to the point where it becomes dangerous.

In fact, a good high-quality RV lithium battery will be safer than regular lead-acid one.

Do RV lithium batteries leak?

Lithium batteries should not be leaking and if you find that a lithium battery in your RV is leaking you should take it out immediately and place it in a safe area far away from anything that could catch fire as the battery may be on the verge of exploding.

Be very careful around any lithium battery that is leaking or looks like it may be damaged as it could be very hazardous.

That being said a good quality lithium battery made by a good company should not have any of these problems. That’s why it’s so important to purchase a good battery and not cut corners.

Will RV lithium batteries freeze?

Yes, lithium batteries will freeze but a frozen lithium battery isn’t necessarily destroyed. You should never charge a lithium battery that is in temperatures of 32°F (0°C) and lower. Charging frozen lithium batteries is what damages them.

On high-quality lithium batteries, the built in BMS will often have a low temperature cut off which will stop the battery from charging in dangerous temperatures.

If your lithium RV battery does not have a low temperature cut off you can get an external one like the Victron Smart Battery Sense (click to view on Amazon) that will help you monitor the temperature of your batteries and alert you conditions become unsafe for charging.

Can lithium RV batteries be recycled?

Lithium batteries can be recycled but it’s a tough process and not all recycling plants accept large lithium batteries. If you need to dispose of an old lithium battery check around and find a local recycling center or even a store that will accept othem.

You should never just throw them away in a regular trash can.

What is the right voltage for a lithium RV battery?

12 volt. RVs and campers run on 12 volt power and that’s the voltage of a lithium battery that will be the easiest to hook up to your camper.

Have any more questions about RV lithium batteries? Leave a comment below.

by Jenni
Jenni grew up in a small town in Idaho. With a family that loves camping, she has been towing trailers since a very young age.

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