YHXS New Compatible Laptop Battery [9-cell 11.1v 7800mah] For Lenovo SL410 SL510 T410 T410i T420 T510 T520 W510 Series Li-ion- 12 Months Warranty Battery type: Li-ion;Voltage:11.1V;Capacity: 7800mAh; Cells:9-cell;Color: Black. Built-in circuit protection ensures both safety and stability. Standard system battery specifications. 24 x 7 email support, 12-month hassle-free warranty. 100% New from Manufacturer.