SL410 Laptop Battery for Lenovo ThinkPad E40 E50 L410 L420 L510 L520 L412 SL510 T410 T510 T520 W510 ; ThinkPad Edge 14 15 E420 E425 E520 E525 ; fits P/N 42T4791 FRU 42T4751 (Pack of 1) 6 cell laptop battery replacement for Lenovo thinkpad batteies 42T4235 42T4731 42T4733 42T4737 42T4753 42T4757 51J0499 57Y4185 ASM 42T4703 ASM 42T4752 ASM 42T4756 ASM 42T4794 ASM 42T4796 FRU 42T4702 FRU 42T4751 FRU 42T4755 FRU 42T4791 FRU 42T4793 FRU 42T4795 FRU 42T4797 FRU 42T4817 FRU 42T4819 10.8V 5200mAh black 206.60x50.00x20.20mm 300.0g. 10.8V and 11.1V is compatible, 14.4V and 14.8V is also compatible. Full compatible with your original battery, brand new direct from Professional Manufacturer. CE UL RoHS certified, safe use. 12-months hassle-free warranty service, buy with confidence NOTE: Not work for Lenovo ThinkPad E420 laptop battery.