BND 7800mAh Laptop Battery[with Samsung Cells] for Sony Vaio VGN VGP-BPS21A, VGP-BPS13B/Q, VGP-BPS13/B, VGP-BPS13B/B, VGP-BPS13 , VGP-BPS13A, VGP-BPL13 - 24 Months Warranty [9-Cell Li-ion]