Specifications: 6 Cell, Li-ion battery, Rated at 11.1V(10.8V Compatible) 5200mAh Compatible Models: Li-ion Laptop Battery for Toshiba PA3819U-1BRS PA3817U-1BRS Satellite A665 A665-S5170 A665-S6050 A665-S6086 M505-S4940 M645-S4050 M645-S4070 L645 L755-S5277 L775D-S7222 P745-S4102 Compatible Part Numbers:Toshiba PA3816U-1BRS PA3816U-1BAS Toshiba PA3817U-1BRS PA3817U-1BAS Toshiba PA3818U-1BRS PA3818U-1BAS Toshiba PA3819U-1BRS PA3819U-1BAS PABAS227 PABAS228 PABAS229 PABAS230 All ASUNCELL Products are CE- RoHS- FCC- Certified and Built-in circuit protection ensure both safety and stability; Strict guidelines for compatibility, and standards compliance for environmental safety