Battery Type: Lithium-ion Volts: 11.1V Capacity: 3400mAh Dimensions: 189.65 x 66.00 x 25.50 mm Color: Black Description: Rechargeable Laptop Replacement Battery for IBM ThinkPad T30 Series laptop computer. This battery can replace the following part numbers: 02K6580, 02K6606, 02K6607, 02K6608, 02K6687, 02K6690, 02K6691, 02K6923, 02K6924, 02k6762, 02k6763 This battery is also compatible with the following models: IBM ThinkPad 240 Series (High Capacity) ThinkPad 240, ThinkPad 240X, ThinkPad 240Z