Tech Rover Asus A41-K53 trade; Max-Life Series 6-Cell Replacement Battery 100% Compatible - Will not void your original laptop warranty 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 1 year warranty against manufacturer defects. 6-Cell High Throughput Battery, also known as Asus X54, X84 battery