Pack of 4x 1500mAh 3.2V LiFePO4 Batteries for OpenUPS2 with storage box (3 required). Size: 18650; Capacity: 5.76Wh; Charge: Standard 300mA, Rapid 1.5A to 3.6V; Max Continuous Discharge: 8A; Cut-Off: 2.0V. More details