Specification: Battery type: Li-ion Voltage: 11.1V(Compatible with 10.8V) Capacity: 7800mAh Cell:9Cells recharge cycles： 500 Operation time: Around 2.5-3.5 hours Note : not compatible with Thinkpad L430,L530,T430,T430i,T530,T530i,W530 Compatible Models：( Ctrl + F for fast search ur laptop model) LENOVO ThinkPad E40 ThinkPad E50 ThinkPad Edge 0578-47B ThinkPad Edge 14" ThinkPad Edge 14" 05787UJ ThinkPad Edge 14" 05787VJ ThinkPad Edge 14" 05787WJ ThinkPad Edge 14" 05787XJ ThinkPad Edge 14" 05787YJ Thinkpad Edge 14" 0578F7U ThinkPad Edge 15" ThinkPad Edge E420 Thinkpad Edge E425 ThinkPad Edge E520 ThinkPad Edge E525 ThinkPad L410 ThinkPad L412 ThinkPad L420 ThinkPad L421 ThinkPad L510 ThinkPad L512 ThinkPad L520 ThinkPad SL410 2842 ThinkPad SL410 2874 ThinkPad SL410 series.
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