9-Cell 97Wh M5Y0X Battery for Dell Latitude E6420 E6430 E6440 E6520 E6530 E6540 E5420 E5430 E5520 E5530 Inspiron 4420 5420 5425 7420 7520 N4420 N4720 N5420 M421R M521R 2P2MJ NHXVW 71R31 11.1V

Worked fine installed the new battery and charged it up lasts about 3 hours when fully charged!!!

This battery fits my Dell E6520 laptop and has not had any problems. The battery I received was made by Samsung, which was a pleasant surprise. The cells are made in Korea and the battery was assembled in China. I can't speak to the longevity of the battery yet, but it gives me peace of mind that it was produced by a reputable manufacturer.

Bought this for my older business laptop. These laptops aren't known for having efficient hardware so I got the highest capacity battery I could find. Before my old 6 cell battery died I'd get just a littler over 2hrs of use. After charging the new one the PC is estimating a little over 5hrs of use.Battery fit as it should and definitely has the needed higher capacity for these older energy hungry laptops. Hopefully it'll last. If the battery fails prematurely I'll update this review.

i bought a replacement for a dell laptop on december 29 24, its now march 16 25, and the battery is no good, lasts 5 minutes unplugged. dont waste your money

If your into repairing older laptops, then this is a good buy.

I almost bought the smaller battery that is only 6 Cell and 57 Wh. This battery lasts much longer than the smaller one. Im very happy. My sons laptop will get a few more years of use thanks to this battery. It came securely packaged and was easy to swap out my old battery for a new one.

Computer recognizes it as a Dell Battery

My wife's laptop really likes this battery. Had one from another source that the computer could not identify. The way it sticks out from the back of the laptop makes it very easy to remove. Longevity determination will take time to tell. We'll see what it is doing after a years time.