... laptop battery for Dell Latitude D531 D820 D830 9 cells 7800mAh 11.1V grade A cell,long time working,best quality,fast ... shipping laptop battery for Dell Latitude D531 D820 D830 9 cells ... ,YW670, Specification Dell Latitude D531 D820 D830 BatteryType: Li-ion, 9 cellsVoltage: 11.1VCapacity: 7800MAHFit Laptop ModelsDELL LatitudeD531, D531N, D820, ...