65Wh MR90Y Replacement Laptop Battery For Dell Inspiron 3421 5421 15-3521 5521 3721 5721 – 6-Cell Li-Ion 11.1V

Heads up, Dell Inspiron users!

If your laptop's not holding a charge like it used to, grab this 65Wh replacement battery.

It fits a bunch of models: 3421, 5421, 15-3521, 5521, 3721, 5721 – you name it.

It's a 6-cell Li-Ion battery running at 11.1V.

Works with part numbers like MR90Y, 0MF69, 312-1390, and many more (seriously, check the list).

Brand new, made in China, and comes with a 3-year warranty.

Unbranded, but who cares?

It gets the job done.

Snap it in, juice up, and get back to work without being tethered to the wall.