BATTERY 42T4751 Battery Replacement for Lenovo ThinkPad L410 L412 L420 L421 L510 L520 SL410 SL510 T410 T420 T510 T510i T520 W510 W520 42T4751 91 42 T4753 42T4755 57Y4186 [10.8V / 71Wh]