VMAXTANKS LFP27-12100 Lithium Iron Phosphate (LiFePO4) Battery – 12V (12.8 Nominal Voltage) 100Ah, 1280Wh, Group 27. BATTERY MANAGEMENT SYSTEM (BMS): The built in BMS system provides safe and reliable operation of your Lithium Iron battery. The advanced BMS in Vmaxtanks Lithium Iron batteries provides high voltage / low voltage protection, over discharge protection, over charge protection, high/low temperature charge and discharge protection, short circuit protection and automatic cell balancing. LIGHTWEIGHT & POWERFUL: The LFP27-12100 weighs 25 LBS and offers 1280Wh of capacity. 100 Amp maximum constant discharge current and 150 Amp max 3 second discharge current. BUILT IN TEMPERATURE SENSOR: Over-Temperature Protection while charging (< -5C ( 23F) , >65C (150F)). Over-Temperature Protection while discharging (< -20C (-4F), >65C (150F)) LONG SERVICE LIFE: ~10 Year design life, 4000+ cycles at 90% depth of discharge(DOD) and ~6000 cycles at 80% DOD. CHARGING: Charge at 14.4V - 14.6V, compatible with Lithium or AGM Chargers with 14.4-14.6V output or other LiFePO4 smart chargers, alternators(<15V), solar charge controllers, and compatible DC converters.