I've only used this charger twice and both times it worked as billed. It charges multiple batteries at one time as well as two other USB power connections for your remote and mobile device (or something else that needs juice). Batteries seemed to charge very quickly, especially considering you can connect three at a time. I can't say I'm totally comfortable using a non-DJI product on my batteries and remote, as they are Lithium Ion batteries which can overheat and burst into flames, but I've not heard of any issues from other users so far. I've also heard/seen YouTube videos claim that the unit is not actually grounded (board is not connected internally to ground lead), which gives cause for additional concern. I would suggest that you not use this device unsupervised until it has some history.

Just a few cons to note:
>The cooling fan makes a bit of noise but not terrible.
>The unit is not flat and makes a weird sound when you touch or move it, mine also makes an annoying vibrating sound if it's not sitting "just right". Usually this can be remedied by placing it on something soft. Perhaps add some rubber padding or bumpers to the box?
>It's large and does not fit in my new larger, aftermarket carrying case

I will post an update later after more use.

This battery is amazing. I purchased it for my dji mavic pro. This battery is as good or better quality then the oem one. The product is very sturdy and comes with a battey monitor on the front of the battery case. I purchased this battery to have a spare so when i go out flying i can always have 1 or 2 on the charger. After getting this battery and not knowing what to expect because of the low price my mind was blown with the quality. I got this thing in and charged it up and went out and tested it. The first flight was amazing and this battery blew my mind. It lasted 8 mins longer then the oem battery that came with my drone. This is awesome quality and a amazing product. I will deff be doing buisness with the seller again he was fast and friendly and answered my questions before buying it.

I was very impressed with how well the battery was packaged. The battery worked like it was supposed to. Came in on same day delivery and had no problems with it since. I was at first skeptical because of the few bad reviews this product had from previous customers saying it was defective and not working, but I'm glad I didn't let that affect my decision to purchase them. Because now I have two more great working batteries for my Mavic Pro.

Works as expected. It is 20 grams heavier than the official DJI Mavic Pro Platinum battery that is why Powerextra lists shorter flight times.

Works very well, charges fast (three batteries at a time) removable power cord.
All-in-all better than the stock DJI charger and it is air cooled and remains warm
while charging 3 batteries.
After purchasing this charger once, I found that I needed a second one for the car.
I carry my Mavic in the car so I am ready if I see a good place to fly and take pictures.
I purchased a little 150 watt Cube power inverter but 150 watt converter wasn't up to the job. Get one with more watts.
I will never be without full batteries and a charged Ipad and controller.
As I said before..."you need this" and I add....put your DJI charger in your unused Mavic accessories box.
update. I bought another one....they are that good! Now I have one for the bench and one for the van.

stuff you have but don't use....you will use this!