FGY&reg; 6 Cell 5200mah Lithium-ion Laptop Battery for Dell Inspiron 1520 1721 1521 1720 530S Brand:FGY ;12 Months Warranty! ;30 Days Money Back Guarantee Battery type: Li-ion; Capacity: 5200mAh ; Cells: 6 cell; Voltage: 11.1V Package indluded:One laptop battery (in strong box)