RV & Van Life Batteries

Add up the amp draw of everything the battery has to run, multiply by the hours you want between charges, and leave some headroom. If you would rather not do the math, our team will size it with you over the phone.

Two 6V golf-cart batteries in series give you 12V with excellent deep cycle life and are a long-standing RV standard. A single 12V lithium battery gives you more usable capacity for far less weight and no watering. Both are valid; it comes down to budget and how much you use the rig.

LiFePO4 — lithium iron phosphate — is the most thermally stable lithium chemistry in common use. Compared with lead-acid it holds voltage under load far longer, weighs a fraction as much for the same usable capacity, and needs no watering or terminal maintenance.

Group size describes the case dimensions and terminal layout, not the capacity. Match the group size stamped on your current battery — every product page lists the group size and dimensions so you can confirm it fits the tray you already have.

A lead-acid charger can undercharge a lithium pack and shorten its life. Use a lithium-compatible charger — everything in our Lithium-Compatible collection is profiled for LiFePO4.

It needs a lithium charge profile. Many modern converters and controllers have one, but a unit built only for lead-acid will not fully charge a LiFePO4 bank. Check the settings before you swap the batteries.

Terms vary by product line — the term for each battery is listed on its product page, and the full details are on our Warranty Information page. Register your battery online after purchase to activate coverage.

Call our US-based battery team on 1-800-827-3232 before you order. Tell us the machine, the tray you are working with and how long you need to run between charges, and we will point you at the right part number, or message us.