Toshiba PA5109U-1BRS Original 6 cell Genuine OEM Battery TechRover&trade; USB card reader combo Genuine battery with Tech Rover branded item Tech Rover&trade; Quality product with 30-DAY Worry-Free Return Policy Brand New Battery, 4400-5200 mAh, Effective Capacity All Tech Rover&trade; branded items carry a 6 month warranty against manufacturer defects. 6-Cell High Throughput Battery