This replaceable powerful rechargeable Li-Ion battery is specifically designed to power AGM RattlerV2 Rattler-C V2 and Clarion series thermal devices. Capacity - 4400 mAh Nominal Voltage - 3.6 V Standard Charge Current - 1.32 A Standard Discharge Current - < 1 A Compatible Devices: RattlerV2 Series Rattler-C V2 Series Clarion Series Dimensions - 55.9 x 37.4 x 34 mm (2.20 x 1.47 x 1.34 in)