... battery for Dell Latitude D531 D820 D830 9 cells 7800mAh 11.1V grade A cell,long time working,best quality,fast shipping ... battery for Dell Latitude D531 D820 D830 9 cells 7800mAh 11.1V Compatible Part Numbers 310-9122,310-9123,312-0393, ... YW652,YW670, Specification Dell Latitude D531 D820 D830 BatteryType: Li-ion, 9 cellsVoltage: 11.1VCapacity: 7800MAHFit Laptop ModelsDELL LatitudeD531, D531N, D820, ...