Rechargeable notebook/laptop battery for Sony BPS11 Professional manufacturer Brand new & grade A cell with good quality ... -ionVoltage:11.1VCapacity:4400mAhColor:BlackReplace Battery Code: VGP-BPL11 VGP-BPS11 VGP-BPX11 Compatible models:SONY VGN-TZ121SONY VGN-TZ37N/PSONY ... manufacturer of laptop battery Rechargeable notebook/laptop battery for Sony BPS11