New GJKNX Replacement Laptop Battery for Dell Latitude 5580 5480 5590 5490 5280 E5480 E5580 E5490 E5590 Precision 15 3520 3530 Series 7.6V 68Wh 8500mAh Battery

I tried one of the cheaper replacement batteries but found that the it didn't do much better than my 6 year old OEM Apple battery which had over 200+ cycles on it. It's age and cycles that really combine to do a battery in. I decided to go with this battery as it was well reviewed and I am adding my "thumbs up" for this one. The tools included are literally one time use only as they wear out quickly as the metal the pentalobe screwdrivers are made of are really soft and strip easily. Additionally, they threw in silicone keyboard membrane for free in the box.I use the Battery Health app on my Macbook Air 11 (Mid 2013) and this is the new battery's stats as of my 3rd use. I am pretty sure it won't get 16hrs but the capacity is greater than the original as it has four cells instead of the six the OEM one had and the four cells have a total of 5200mAH of capacity. I think the original had like 5100mAH as the batteries on the left and right of the center two in the OEM original were two separate cells whereas this replacement has only one on each side giving it a bit more capacity.

When I use any new LIthium battery I look initially ate some key Parameters. These are good indicators of proper storage and reasonable to low internal resistance a sign of a good battery. The charge right after install was reported as 51% outstanding 50% is best. I then went to the battery health. Showed "Normal Health" and only 1 cycle. The battery appears to be charging at a reasonable rate and is real cool a very good sign. Now my wife can use her Macbook untethered to power. I will report again on health and Time of use per charge after at least 20 cycles but all indications are this battery is good and definitely a proper replacement. Thanks Xinglt

I bought this battery because my original one was going bad. It was only lasting about 2 hours before dying.The Good;It was extremely easy to install and came with all the tools required.The Bad;The battery lasts between 4 and 5 hours. Not the 10 hrs they say in there advertising.

I’ve had this battery for about a month now and this battery is terrible. I should’ve just taken my battery to Apple. I followed the instructions that they had regarding charging your battery to a tee and my battery does not last at all. My laptop went from 35% to 9% in less than 10 minutes and then turned off at 9% without warning. I’d say from a full charge, I have maybe 2.5-3 hours of use which is what my decayed Apple battery was already giving me.

The battery arrived in great condition! The package also contained the screwdrivers needed to install and a bonus keyboard cover! The battery seems to be of good quality and the weight was about the same as the original. The installation took about 20 minutes and after the switch, the MacBook runs as good as new! I'll be ordering more batteries for my other devices from Xinglt. Very happy with the product and price!

The battery fits well in our MBAir-11". The battery can last almost 10-hours of use on one charge - at least for now, 2 weeks into service!

So far so good. Replaced my original battery with this one about a month or so ago. Fast shipping & super easy to install.

After a couple of months of barely using it the battery drains so quick and has so many issues my Mac works better without it smh.