Review on NinjaBatt High Performance Battery For Dell Inspiron 15 - 11.1V/74Wh by David Grajales

I ordered this for my Dell 15 7559 after the original battery would only last about 45 minutes on a full charge. Normally I would pay a little extra for the Dell branded battery, because I've had bad luck with third party replacements. Unfortunately Dell no longer makes this battery despite it only being a couple years old.The battery works, but it's not as good as the original. Right off the bat you'll notice this one is much lighter weight. With regular use, i only get 2-3 hours of battery life with the NinjaBatt battery, this is pretty poor considering I'd normally get 4 hours on the Dell branded battery.Overall, it's cheap and works for the most part but you end up losing a good amount of capacity compared to OEM. The problem is, at this point there aren't many reliable options.