Toshiba PA3285U-1BAS and PA3285U-1BRS Batteries by Amstron are designed for use with Toshiba Satellite A10 and A15 Series. Amstron Laptop batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility, and safety to exceed original equipment manufacturer specifications. • Chemistry: Li-Ion • Ratings 11.1 Volts 4400mAh Capacity