Core- 12V 300Ah Deep Cycle Lithium Iron Phosphate Battery with self-heating59% more power than a same sized 200Ah LiFePO4 Battery. BMS protection for low temperature protection. Support series, parallel, or series parallel connections. 2x faster self heating triggered at 32 (0). Backed by a 5 year warranty for peace of mind. More Power, More Possibilities. The Renogy 12V 300Ah Core delivers 59% more power than a 200Ah LiFePO4 battery of the same size. Get the extra capacity you need to weather unexpected storms, hurricanes,