rge99 Posted at 2017-2-27 14:16
I would just use the P4 charger and get a 12v inverter to plug it in. That way, you are using an approved DJI charger and the inverter shouldn't cost you more than $30
Sure, that'll work. However, when I travel I have 4 batteries with me, and I'll typically use all 4 between my 2 Phantoms. I bought one similar to the black one linked above, and having a second battery charge connection is very handy. But:
you need to ensure that the rating is adequate to change for each arm (2);
for that reason, I wouldn't try to charge two batteries AND the controller; and
the car should be running when you do this (which isn't an issue if you're travelling).