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good
It's good!
It arrived today. I thought it would be bigger but thankfully it is very compact. You can connect two batteries and a usb cable for either the controller or the Mavic Mini with the third battery (although I would advise against it in case the drone fells from the passengers seat during a bumpy ride. I have not tested it yet since Covid-19 has grounded us all.
As ordered
This is a life saver.
Very well made. Although not tested on the Mavic Mini for parallel charging, I will say that thought and effort has been put into this car charger. There are two charge ports for your batteries, and one USB for the controller. The USB can be used for anything else that needs usb charging. I recommend this car charger. It was reasonably priced and worth having if you travel with your drone.