CWK High Performance Battery for Toshiba Satellite L645D-S4040 Laptop Notebook Computer PC for PA3634U-1BRS - 6 Cells Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 10.8 Volt (11.1 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!