Dr. Battery Advanced Pro Series Laptop / Notebook Battery Replacement for Sony VAIO VGN-AW125J (4400 mAh) 800+ charge cycles. 2 Year warranty (No additional firmware modification needed.) 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 mAh, 5200 mAh, Effective Capacity All Tech Rover&trade; branded items carry a 6 month warranty against manufacturer defects. 6-Cell High Throughput Battery