Using it with the original charger.
This is like the parallel charger that I have:
Rapid Multi 3 Battery Parallel Charger Board Plate For DJI Phantom 2 Vision O3T#
I purchased this exact item a year ago & it wouldn't change more than 1 battery at a time. I didn't sweat it since the cost was priced like the crap it was....
I'm rocking a P2V++ {loaded with every type of upgrade & mod possible}
& A "INSPIRE V-2"
Mine works fine - it just takes a long while. I will have to get around to connecting the 250w power supply I have been saving for it. I like the way it shows the voltage/current on the display.I have one and it works fine.