Dell 8858X Latitude Battery Tech Rover&trade; Max-Life Series with Tech Rover&trade; USB card reader Genuine battery with Tech Rover branded MicroSD Card Reader 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