Toshiba Satellite A305-S6843 Replacement Battery by Tech Rover&trade; Max-Life Series 12-Cell [Extended-Capacity] 100% Compatible - Will not void your original laptop warranty Tech Rover&trade; Quality product with 30-DAY Worry-Free Return Policy Brand New Battery, 8800-10400 mAh, Effective Capacity All Tech Rover&trade; branded items carry a 6 month warranty against manufacturer defects. 12-Cell High Throughput Battery