SOK 12V 280Ah LiFePO4 Battery with Built-in heater & Bluetooth

SOK SK12V280H 280Ah LiFePO4 battery is designed for cold weather usage! You can safely charge at temperatures down to 4°F by a standard charger or solar charge controller. Inverters R US hot tip:  The heater pads draw power from the charger itself, so no power lost from the battery cells themselves. SOK SK12V280H Features: 7 year warranty and maintenance free with a 8000~12000 cycles life span.Detachable cover with replaceable BMS and cells.Built-in heater pad for using in down to -4°F.Bluetooth4.0 , support iPhone or Android smartphone.Support connect in parallel for larger capacity.Built-in smart Battery Management System (BMS).Low temperature charging cut-off.High temperature charging or discharging cut-off.Over charging and discharging protection.Over current and short circuit protection.Battery cells auto balance.Note for connecting in series: DO NOT CONNECT OVER 4 Batteries IN SERIES, and make sure to add the battery voltage balancer.  SOK SK12V280H Charge Information: Recomm