Toshiba PA3634U-1BAS PA3634U-1BRS PA3635U-1BAM PA3635U-1BRM PA3636U-1BRL PA3638U-1BAP PA3728U-1BRS PA3780U-1BRS. Remove the old battery, carefully install the new battery on the battery case, screw in the screw, and connect the wiring of the new battery.
eBay