I'm very interested in this thread, cause I'm installing a Viewpad as a car computer.
Well, I also saw the 10-pin miniUSB plug, and I also thought that there was 5V and 12V for quick charge.
So, ...I cut the cable to inspect it. There are only two little cables inside: one red and another black.
Then, I joined theese two cables to a normal car charger, and, ...it works! The charge is as quick as the original wall charger!
The problem is that original 10 pin USB is too large for my car integration, and I need an angled one.
So, I analize continuity of original pinout:
red: pin 1, 6, 7
black: pin 5, 8, 9, 10
..and I use a solder to build another one.
After solder the pins, I tested outputs and were ok, but, ...it doesn't charge quick. It just charge as normal USB.
I don't know if there is something wrong. Anyone can help me?
Perhaps there is a bridge between 2,3,4 pins, but I don't know.