LB1 High Performance Battery for Toshiba Satellite A655, A660, A665 Fits: PA3634U-1BRS, PA3634U-1BAS Battery Type: Li-ion; Capacity: 4000mAh/44Wh; Cells: 6-cell; Voltage: 10.8V 100% Brand New from Manufacturer. Rechargeable Up to 500 times over life of battery. Premium Grade A cells ensures peak performance and reliability. Operation time depends on the capacity of the battery, laptop settings, power consumption of equipment, and how you use it. CE-/RoHS-/FCC- Certified and Built-in circuit protection ensure both safety and stability. Please confirm that your original battery is the same voltage, and your Battery Part Number and Laptop Model are in the compatibility list before making a purchase