EPC 6-cell,10.80V,4800mAh Replacement Laptop Battery for TOSHIBA SATELLITE U500 SERIES Satellite U500 Satellite U505 SATELLITE PRO C600 SERIES Satellite Pro 3000 : PA3634U-1BAS PA3638U-1BAP PA3635U-1BAM PA3635U-1BRM PA3636U-1BAL PA3636U-1BRL PA3638U-1BAP PA3780U-1BRS PA3816U-1BAS PA3816U-1BRS PA3817U-1BAS PA3817U-1BRS PA3818U-1BRS PABAS117 PABAS118 PABAS178 PABAS227 PABAS228 PABAS229 PABAS230 100% Compatible - Will not void your original warranty Tech Rover&trade; Quality product with 30-DAY Worry-Free Return Policy Brand New High output Battery All Tech Rover&trade; branded items carry a 1 year warranty against manufacturer defects.