V7's high-quality replacement notebook batteries are made from the highest-quality cells available & incorporate all of the standard logic boards, thermal protectors, thermistors & circuit breakers to ensure maximum levels of safety, reliability & efficiency. V7's wide selection is compatible with top-line products from all major manufacturers & meets or exceeds original OEM specifications to provide longer-lasting quality.\n\n- Built with high quality components\n- Fits selected Lenovo, IBM notebooks\n- Replacement for original battery part numbers 0C52864, 57++, 45N1150, 45N1151\n- Compatible with 9 cells battery for LENOVO THINKPAD W541 & many others, please see " Compatibility"\n- 10.8V, 9 Cells, 8400m Ah Capacity, Lithium-Ion Technology Feature Feature Value Type Battery Brand compatibility Lenovo Product colour Black Certification CEBattery technology Lithium-Ion (Li-Ion) Battery capacity 8400 m Ah Battery voltage 10.8 VNumber of battery cells 9 Battery capacity (Watt hours)91 Wh Weight 907 g Compatible products LENOVO THINKPAD W541, T440P, T540P, W540, L440, L540 Number of batteries included 1 pc (s)