Which Lithium Battery Is Best For Your RV?

Posted April 14, 2020

A Good RV Needs a Good Battery

When it comes to picking lithium RV batteries, make sure you get the best type for your RV. What if your journey on the open road was cut short because of one bad decision? If you have an RV, you love to travel as far as the road can take you. Unfortunately, the road won't take you very far if your batteries die out! Lithium RV batteries are the best kind of batteries to fuel your latest adventure. But with so many different batteries to choose from, how can you know which ones are best for your RV? With our comprehensive lithium batteries, you'll be able to make the right decision and take this show on the road.

What Makes Lithium Batteries the Best Choice for RV?

We've put together a solid guide to help you choose the best lithium batteries for your RV. First, though, we need to answer the obvious question: what makes lithium batteries the best RV choice to begin with?

One reason is that these batteries can save you money over a long period of time. Rechargeable batteries save money compared to other resources, and they also offer a ton of convenience. After all, who wants to worry about the power in the middle of your travels?

Lithium batteries are also an environmentally-conscious option for your RV. This allows you to enjoy traveling all over the country without stressing so much over your carbon footprint.

These batteries are also maintenance-free. You don't have to become a mechanic or an electrical expert to use, re-use, and enjoy the power of lithium.

Finally, they charge very quickly. In short, you get the power you need, exactly when you need it most.

Other Lithium Benefits

Still not sold on lithium batteries? Here are a few other benefits of these batteries that might just win you over.

Compared to traditional lead-acid batteries, lithium batteries have a much better discharge rate. Because of this, lithium batteries maintain a consistent storage capacity over time.

Lithium is also much easier and more convenient to charge than lead-acid batteries. Those traditional batteries must be charged in stages, and you have to adjust the current for each stage. Meanwhile, lithium batteries can receive a consistent high-power charge without any power loss or damage to the battery.

If you don't like carrying a lot of extra weight around (and honestly, who does?), you're going to enjoy lithium batteries. They weigh about a third of what traditional batteries weigh, making it easier for both you and your RV to carry the handle the extra pounds.

To top it off, lithium batteries are safer and longer-lasting. These batteries don't vent, so you can store them anywhere without worrying about starting a fire. And the average lithium battery lasts 5 times longer than lead-acid batteries, saving you time and money.

RELiON RV Lithium Batteries

Now that you know more about how and why to choose lithium batteries, let's review some of the best possible batteries for you and your RV.

To learn more about how to calculate your energy needs and find the optimal battery for your application and usage, visit our Lithium Battery Selector Tool.

12V 20Ah deep cycle lithium rv battery


In the mood for a smaller battery and you don't want to break the bank? In that case, the RB5, which is a modest 5 amp hours, may be your best bet.

This is one of the most affordable 12V batteries available for your RV. Fortunately, the low cost still comes with a number of great features, including the LiFePO4 cathode and a custom battery management system.

Like all lithium batteries, this purchase is sure to last a good, long time!


The RB100-LT is a 12V 100Ah lithium battery and is part of RELiON’s Low-Temperature Series. This lithium iron phosphate battery is specially designed for cold-weather performance. LT Series batteries can safely charge at temperatures down to -20°C (-4°F) using a standard charger. The system features proprietary technology which draws power from the charger itself, requiring no additional components. The RB100-LT is an ideal choice for use in RVs, off-grid solar, electric vehicles, and in any application where charging in colder temperatures is necessary.


The RB100 is a 100 amp-hour 12V battery and one of the most popular deep cycle lithium batteries around.

It's not hard to see why: this battery is handy for your RV and a number of other applications. And it's only 30 pounds, making for a great compromise between power and weight.

The RB100 surpasses expectations by being versatile, compact, and more powerful than its lead-acid counterparts. It’s the perfect combination of size and capacity to fit many types of recreational vehicles.


Got a heavy lead-acid battery you need to replace? In that case, the RB200 is here to handle everything you throw at it.

One great use for such a big battery is to replace several smaller lead-acid batteries. That means you can enjoy better performance while also enjoying a more convenient RB experience.

At only 61 pounds and 200 amp hours, this battery is a real steal!


You've made it this far through the list and you still need more amp hours? It's time for you to upgrade your RV with the RB300.

This battery is 82 pounds, but it offers a whopping 300 amp hours for your ride. And with lithium batteries, you get the entirety of its rated capacity instead of getting disappointed by false power promises.

Just be warned: this item may redefine what you think a battery can do!

Your Adventure Awaits

Now you know how to select the best lithium RV batteries. But do you know who can deliver them right to your door? We specialize in lithium batteries and helping RV owners power their adventures. To hear more about our competitive prices and custom RV solutions, contact us today!