This is a brand new Dell 312-9122 battery for the Latitude D531 and D820 models. this 312-9122 battery is rated 11.1 volts and 5200 mAh and will normally last 3 hours on a full charge.

This Dell 312-9122 battery is typically superior to the original battery and is 100% compatible with your Dell Latitude notebook computer. The battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.

You can expect about 2 hours to 2-1/2 hours of run time with this 312-9122 battery when new, depending on your energy use. If you are looking for even longer battery run times, check out our Dell-50XT. The higher capacity battery cells inside this cartridge have an energy capacity of 5200 mAh. This battery will be compatible with batteries rated at 4400 & 4800 mAh capacities while providing up to 20% more run time.

This 312-9122 battery replaces Dell laptops: Latitude D531 D820 D830 D840 and the Precision M65 series laptops.