SOK

SOK Battery makes lithium iron phosphate (LiFePO4) batteries for RVs, boats, off-grid solar and home storage. Its 12 V range runs from 100 Ah to 314 Ah, beside 24 V models of 100 Ah and 150 Ah and a 48 V 100 Ah server-rack battery. Cases are metal, sealed plastic or clear plastic. Product pages print cycle ratings as ranges, from 3,000-8,000 cycles on some models to 15,000 or more on others.

Many models add a built-in heater for charging below freezing, Bluetooth monitoring through a phone app, or CAN communication with Victron systems. SOK describes its cases as detachable, with replaceable BMS boards and cells, and sells replacement BMS boards on its own site. The batteries are built in Zhuhai, China, and US orders ship from a warehouse in Chino, California.

SOK sells direct at us.sokbattery.com, on Amazon and through dealers. Its warranty page gives its current 12 V, 24 V and 48 V batteries a 7-year limited warranty in the US, with repair or replacement at no charge, and unused products can be returned within 30 days.