Specifications:
Battery Type: Li-ion
Capacity: 57Wh
Voltage:10.8V
Cells: 6-cell
Color: Black

Compatible Models:(use "ctrl+F" to find out your model quickly)
ThinkPad L410 L412 L420 L421 L430 L510 L512 L520 L530
ThinkPad E40 E50
ThinkPad Edge 0578-47B
ThinkPad Edge 14"05787UJ 05787VJ 05787WJ 05787XJ 05787YJ 0578F7U
ThinkPad Edge 15"
ThinkPad Edge E420 E425 E520 E525
ThinkPad SL410 2842 2874
ThinkPad SL410k 2842
ThinkPad SL510 2847 2875
ThinkPad SL530
ThinkPad T410 T410i T420 T420i T430/T430i T510 T510i T520 T520i T530/T530i
ThinkPad W510 W520 W530 W530I

Compatible Part Numbers:
42T4733 42T4235 42T4731 45N1001 70++ 42T4757 42T4737 42T4753 51J0499 57Y4185 57Y4186
ASM 42T4703 ASM 42T4752 ASM 42T4756 ASM 42T4796 ASM 45N1000
FRU 42T4702 FRU 42T4751 FRU 42T4755 FRU 42T4791 FRU 42T4793 FRU 42T4795 FRU 42T4797 FRU 42T4817 FRU 42T4819 FRU 45N1001

Note:
1.In order to get a correct battery please kindly double check if your original battery's Voltage and Capacity are the same as ours firstly.
2.If you are not sure,pls contact us by email,we would always be here.
3.For the new battery, we suggest all of our customers fully charge it by AC power adapter.
In order to protect your battery life, you can fully charge it to 100% and drain to 3% ,it's a cycle and the capacity will recover.
it's better to make normal use after 2 cycles and charge the battery regularly at least once a month .