Type: Li-Ion, Voltage:11.1V Capacity:4400mAh;6 cells • 1 year replacement warranty. • High capacity battery certified by CE and RoHS, This battery was tested and proven to match and/or exceed original specifications of SONY products • Replacement For: Sony VGP-BPS9 VGP-BPS9A/B VGP-BPS9/B VGP-BPS10 VGP-BPS9/S