Go to Amazon Sites : br br 6 Cell Battery for Sony Vaio VGN-AW VGN-CS VGN-FW VGP-BPS13BQ VGP-BPS13B VGP-BPS13A VGP-BPS21 br br VoltageV 111V Capacity 4800mAh49Wh Cell QTY 6 br Dimension 2044 x 575 x 211mm Color Black br Weight 324g Type Li-ion br Replacement For VGP-BPL13 VGP-BPS13AB VGP-BPS13BB VGP-BPS13 VGP-BPS13B VGP-BPS13AQ VGP-BPS13AR VGP-BPS13AB VGP-BPS13BQ VGP-BPS13B VGP-BPS13A VGP-BPS21 VGP-BPS21A VGP-BPS1321B VGP-BPS13Q VGP-BPS21B br Please make sure that the battery part numbers listed in the description matches the part number on your original battery before you purchase