This Dell KJYFY battery is rated 11.4 volts and 90 Whr and will normally last 4-6 hours on a full charge. You can get longer battery life by dimming your screen and closing unused programs and applications.

This Dell KJYFY battery is compatible with the Alienware Area 51m, Alienware Area 51m ALWA51M series of laptop models. Additional compatible laptop models and Dell Alienware battery part numbers are listed below. You can find your part number listed on the bottom of your laptop next to the P/N tag.

We use the highest quality li-ion battery cells and components. Quality parts can make the difference between a 6 month lifespan or a 4 year lifespan. We're so confident in our laptop battery quality that we back each one with a 2 year warranty and 30 day return.