Our LiFePO4 RV Lithium Battery heater is compatible with most RV LiFePO4 battery brands) for those people who camp in cold weather.  Our battery heater wraps around one or two batteries, and provides 60W of heating power.  It includes a custom thermostat that turns the heater on at 35F and off at 45F, saving energy.  It has a second fail safe thermostat that will shut the heater off at 65F.  Li Battery NOT INCLUDED!