Replace your worn-out laptop battery with a brand-new Dell 15-3521 battery. This Inspiron 15-3521 battery replaces the original battery found in a wide variety of Dell Inspiron, Vostro, and Latitude models. To make sure you get the right battery, look on the battery itself for the “Dell Type” part number. It should match up with the 15-3521 battery part number or other part numbers from the list below.

This 15-3521 battery is rated at 40 Whr – the highest rating available for a 4-cell battery pack. The higher the mAh rating, the longer your battery can run on a single charge.

All our products carry a full 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.

You can expect up to 3 – 4 hours of run time with this Dell 15-3521 battery when new, depending on your energy use.