Type: rechargeable Li-ion Voltage: 10.8V Capacity: 4,400mAh Color: black Warranty: one year Fits for laptop models: IBM ThinkPad X20, X21, X22, X23 and X24 series Replacement for battery models: IBM FRU 02K6651, 08K8024, 02K6653, 02K6758, 02K6845, 02K6653, 02K6710, 02K6760 and 02K6846