This is a brand new Dell Inspiron 17 7779 battery. This battery is also compatible with the Dell Inspiron 17 7000 series, including the 17-7779 and 17-7778 models. It also replaces the Dell original battery part number 33YDH.

This Dell Inspiron 17 7779 battery is rated 15.2 volts and 56Wh and will typically last 3 hours on a full charge. You can get longer battery life by dimming your screen or closing unused programs and applications.

This Dell Inspiron 17-7779 battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 1 Year warranty.

You can expect about 2 - 3 hours of run time with this Dell Inspiron 17 7779 battery when new, depending on your energy use.