Best 12V Lithium Batteries Under $500

For kayak trolling motors, fish finders and small solar kits where weight matters more than runtime.

For kayak anglers, ice fishing and small portable setups that need a light battery with a long warranty.

A tested, self-heating 100Ah battery with app monitoring, for RVs and solar setups that see winter charging. Priced well below most heated batteries.

The cheapest way to get self-heating in a Group 31 battery, for cold-weather RV and marine use. Independent testing confirms its rated capacity.

A good-value Group 31 drop-in for boats and RVs used in mild climates. Independent testing shows it delivers more than its rated 100Ah.

A cheap, IP65 Bluetooth 100Ah battery for RV, solar and marine use, from one of the larger storage-battery makers. Cold-climate users need a heated model instead.

For campers and small RV or van builds that need a compact, inexpensive 100Ah battery from a known brand. Choose a heated model if you charge below freezing.

A plain Group 24 lithium battery for buyers already using BougeRV fridges or solar gear. Check the BMS rating against your load before buying.

A strong pick for compact 100Ah builds in vans and small boats. It matches the LiTime Xtra-Mini’s size and features for less money.

A budget Group 31 replacement for lead-acid in boats and RVs that stay above freezing.

A low-cost Group 24 lithium battery with a phone app for boats, RVs and small solar setups. Buyers who need 36V or 48V banks, or cold-weather charging, should look elsewhere.

For RVers and boaters who charge in sub-freezing weather. The built-in heater and Bluetooth monitoring justify the premium over the standard model.

A well-documented Group 24 battery with an IP65 clear case, Bluetooth and 4-in-series support, for boats and trolling motors. It costs more than budget brands, but SOK publishes a full spec sheet.

For vans, small boats and builds where space is tight. It packs a full 100Ah, Bluetooth monitoring and cold-charge protection into a Group 22NF case.

For RV and off-grid owners who want one large battery instead of a pair. It also has enough BMS current for a 2,000W inverter.

For solar and RV setups with modest inverters that want the cheapest 200Ah. Pick a 200A-BMS model if you run a big inverter.

For RV and off-grid owners in mild climates who want 200Ah and a big inverter at a low price. Skip it if the battery will see freezing temperatures.