CWK&reg; New Replacement Laptop Notebook Battery for Lenovo ThinkPad 42T4755 42T4756 42T4757 42T4758 42T4763 42T4764 IBM Lenovo ThinkPad Edge 14 05787UJ 05787VJ 05787WJ 05787XJ 05787YJ Lenovo ThinkPad T410 T510 L420 L520 SL410 SL510 42T4751 SL410 SL510 42T4708 Lenovo 57Y4185 51J0499 51J0500 Lenovo ThinkPad SL410 SL510 T410 T420 T510 T520 51J0497 42T4690 W520-4281-xxx W520-4282-xxx W520-4284-xxx Lenovo FRU 42T4751 42T4755 42T4791 42T4793 42T4795 42T4702 IBM Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 10.8 Volt (11.1 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!