0A36311 48Wh New Laptop Battery for Lenovo B Series: B590, ThinkPad E Series: E430 E430c E431 E435 E440 E445 E530 E530c E531 E535 E540 E545, 45N1048 45N1049 45N1043 45N1042 Battery type: Li-ion; Capacity: 48Wh; Voltage: 10.8V ; Cells: 6-cell. Fit 0A36311 Lenovo ThinkPad Battery 75+ (6 Cell) 45N1048 45N1049 45N1043 45N1042 Compatible with Lenovo B Series: B590, ThinkPad E Series: E430 E430c E431 E435 E440 E445 E530 E530c E531 E535 E540 E545 WARNING - This item does NOT work on the Thinkpad E420, E425 (AMD), E520, E525 (AMD), Edge 14, Edge 15, L510 - See lenovo part # 51j0499 Worry-free 12-month warranty and friendly customer service.