Yafda T410 57Wh New Laptop Battery for Lenovo Thinkpad T410 T420 Sl410 SL510 T510 T520 E40 E420 E520 Series 42T4795 42T4793 42T4791 55+ 55++ 25 25+ [ 10.8V5200mAh ] Battery type: Li-ion ; Voltage: 10.8V Cells: 6-cell ; Capacity:5200mAh/57WH ; Replacement for Lenovo Thinkpad T410 T420 Sl410 L412 L420 SL510 T510 T520 E40 E420 E520 series Grade A cells mitigate the risk of battery leakage and maximize output stability. Built-in circuit protection, enhances safety of usage and extends battery life. 100% New from Manufacturer. Warranty: 30 Days Money Back Guarantee / 12-month worry free warranty for our product Please contact us with any questions or concerns - we are here to help! Products trademarked Yafda. We focus on providing quality power products and excellent customer service. Part number:42T4235, 42T4703, 42T4708, 42T4714, 42T4731 ,42T4733, 42T4737, 42T4753 ,42T4756, 42T4757, 42T4763, 42T4764, 42T4798, 42T4803, 42T4819, 42T4848.