Type: Lithium Iron Phosphate(Lifepo4) Battery Nominal voltage: 3.2V Nominal capacity: 50Ah Model: LF50 Charge cut-off voltage: 3.65V Discharge cut-off voltage: 2.5V Standard Charge Current: 25A Max charge current: 50A Max Continuous discharge current: 50A Peak discharge current: 150A(1-3S) Charge temperature: 0~55 Discharge temperature: -20~65 Internal Resistance: 2.0m© Cycle life: 1500 cycles @ 0.5C/0.5C at 25 Weight: Approx 1.2Kg Dimension(L*W*H): 148.3±0.5mm*26.7±0.5mm*129.8±0.5mm