Battery Type: Replacement BatteryCell Type: Li-ionBattery Number: 6 CellsVoltage: 10.8VCapacity: 4400mAhColor: black**Replace Part NO.42T4235, 42T4731, 42T4733, 42T4737, 42T4753, 42T4757, 51J0499, 57Y4185, ASM 42T4703, ASM 42T4752, ASM 42T4756, ASM 42T4794, ASM 42T4796, FRU 42T4702, FRU 42T4751, FRU 42T4755, FRU 42T4791, FRU 42T4793, FRU 42T4795, FRU 42T4797, FRU 42T4817, FRU 42T4819 **Compatible With:For LenovoThinkPad E40ThinkPad E50ThinkPad Edge 0578-47BThinkPad Edge 14"ThinkPad Edge 14" 05787UJThinkPad Edge 14" 05787VJThinkPad Edge 14" 05787WJThinkPad Edge 14" 05787XJThinkPad Edge 14" 05787YJThinkPad Edge 15"ThinkPad L410ThinkPad L412ThinkPad L420ThinkPad L421ThinkPad L510ThinkPad L512ThinkPad L520ThinkPad SL410 2842ThinkPad SL410 2874ThinkPad SL410 SeriesThinkPad SL410k 2842ThinkPad SL510 2847ThinkPad SL510 2875ThinkPad SL510 SeriesThinkPad T410ThinkPad T410iThinkPad T420ThinkPad T510ThinkPad T510iThinkPad T520ThinkPad T520iThinkPad W510ThinkPad W520