ATC Extended Battery Replacement for IBM Lenovo ThinkPad E40 E50 Edge 0578-47B 15" T410 T410I T510 T510i W510 14" SL410 2842 2874 SL410k 2842 SL510 2847 2875 Series 05787UJ ThinkPad Edge 14" 05787VJ ThinkPad Edge 14" 05787WJ ThinkPad Edge 14" 05787XJ (6-Cell Equivalent) Replace PN:LENOVO 42T4733 42T4235 42T4731 42T4757 42T4737 42T4753 42T4763 42T4764 ASM 42T4752 [11.1V 5200mAh]