Futurebatt High Performance 5200mAh 11.1V Battery Laptop Battery Replacement for Dell Latitude D531 D531N D820 D830 Precision M4300 M65 M65 Mobile

Direct fit, works well

So far very good. The order came quickly, and included two screwdrivers for the sizes needed to install the battery and replace the laptop cover. Installation was quick and the battery life is over 4 hours. I can get a few more years out of a 9 year old Yoga laptop, which is great!

The battery was exactly what I needed to replace my old laptop battery. Fast shipping and great service.....thanks.

Bought this for my Acer Aspire One 0756. Fits perfectly although as some others have stated it sticks out from the bottom a bit as it is a 'high capacity' battery and the laptop will sit at a bit of an angle with the battery installed instead of 'flat' like the one included with the laptop. The good news is that this battery does work and gives longer life than the one that comes with the laptop from the factory which on mine was rated at 2,500 mWh. Upon doing a battery report under Windows 10, which I have installed on my Aspire One the 'design capacity' is listed as 57,720 mWh but the 'actual' charge capacity is listed as 44,389 mWh. I did two battery run down tests so far from full charge and found that on very light usage with display at about 3/4 brightness I got about 4.5 hours of battery life. The second test I used the laptop a bit more...surfing a number of websites, watching several youtube videos...and the battery life reduced to about 3.5 hours. This is compared to about 2 hours on the battery that shipped with the laptop which has roughly a little less than half the stated mWh battery charge capacity according to the Windows 10 battery test. So while this battery is not going to get you 7 or 8 hours of use I'd still rate it a good value because of the great $18.49 price. I did one more test before I published this review and charged the laptop to full and then reduced the screen brightness down to about 25% and literally did nothing on the laptop. I wanted to see how it would fair if it were being used just to read contents on the screen. The laptop lasted 6.5 hrs this way before automatically shutting down. Not bad for an under $20 battery. But realistically if you're gonna use this battery normally with brightness up 3/4 and typing on it, surfing the web etc...i'd expect to get around 3-3.5 hours from it.

So far, this battery works flawlessly as a replacement for my Acer Nitro 5 battery. The battery life is also great and like it was when my laptop was new. I recommend it 100%

The battery will not charge and will not calibrate. Uninstalled and reinstalled drivers, attempted every recommended calibration method, and physically removed and reinstalled the battery multiple times to troubleshoot. Now that I’ve officially given up it’s too late for a return (only 45 days after purchase). Complete waste of $50 unfortunately.

Works well so far, if there is no update then I had no issues since the date of this review. Way cheaper than an OEM battery replacement.

Battery arrived with 50% charge and fit perfectly in my HP envy x360 15z-ds100