it is the one i have - exact same one - and it works fine. fan is a bit loud, but, charges fine.
Same one i have also. Works great fan is a little loud like paul said. But at least we know it's doing its job and this actually charges the batteries to what they are supposed to be at full charge....4.35 per cell. 17.6v so that is great. Stock charger most of the time will only charge to 4.32
While I dont have this particular unit, I could imagine its similar to my white Mavic Air 4 port charger. The unit is similar in design, no fan and only charges 2A. Benefits are its silent, however unit heats up significantly and battery charging times are higher due. If charging times arent an issue for you and you prefer a fanless solution, this doesnt sound like a bad idea. The storage mode function is also nice if you want to store your batteries for some time (e.g. over winter).
I just got this delivered today. I've included a pic of the specifications in the manual. The USB output is standard 5V vs the 12V smart controller charger. However, as you can see, I have 2 batteries charging concurrently which is a big improvement over the standard charging hub, imo.
