Specifications: - Voltage: 11.1v is compatible with 10.8v - Capacity: 4400 mAH - Brand: Unbranded /OEM Compatible Models: - E40 L410 L420 L412 - SL410 2842 SL410 2874 SL410K 2842 SL410 (Not for 2842-F7U) - SL510 2847 SL510 2875 SL510 - T410 T410i - T510 T520 T520i L510 L520 W510 W520 4389 - ThinkPad Edge E420 E425 E520 E525 0578-47B 14" 05787UJ - 14" 05787VJ 14" 05787WJ 14" 05787XJ 14" 05787YJ Compatible Part Numbers: - 42T4235 42T4708 42T4714 42T4731 42T4733 42T4737 42T4753 42T4756 - 42T4757 42T4763 42T4764 42T4798 42T4803 42T4819 42T4848 42T4849 - 42T4850 42T4851 42T4852 42T4911 42T4912 51J0499 51J0500 - 57Y4185 57Y4186 57Y4545 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 What's in the box Laptop Battery