Get up to 6 hours of battery life with a new Dell Inspiron 17R-5721 battery.
This Inspiron 17R 5721 battery replaces the original Dell type MR90Y battery found in a wide variety of Dell models.
This Inspiron 17-5721 is a 11.1 volt, 58 Whr battery. The 6 cell 58 Whr battery has more than 60% more run time capacity than the original 4 cell 40 Whr battery. Depending on the size of your laptop screen and the power consumption settings of your laptop, you can get up to 6 hours of run time with this battery. If you're looking for the 4 cell 40 Whr version, go to our Dell XCMRD battery.
We use the highest quality lithium-ion cells and battery components that run longer, charge faster, and weigh less than cheaper, lower quality batteries. Lower quality batteries are made with inferior cells and parts that can wear out in as little as 6 months.
Each Dell Inspiron 17R-5721 battery carries a 2 Year warranty and every battery is charged and tested before it ships. We provide a 30 day money back guarantee if you are not completely satisfied.
