Specification: Replacement FRU P/N: 42T4751 ASM P/N: 42T4752 Battery (11.1V 6900mAH/48Wh 9 Cells Li-Ion) for Lenovo Thinkpad SL410 SL510 T410 T510 T520 T520i L410 L412 L420 L510 L512 L520
Compatible with following laptops:Lenovo Thinkpad
E40 E420 E50 E520 T410 T420 T510 T510i T520 T520i SL410 SL510 L410 L412 L420 L510 L512 L520 W510 W520 *Not compatible with T430 T430i T530 T530i L430 L530 W530