I should mention that my main goal here is not for a fast charge, but to keep the gpd xd at the same charge, even with high demand on it. If at the very least buy hours of battery life. I do not plan on sitting in front of the xd for 24 hours or more hehe.
This could finally be the answer for a gpd xd dock that you can let charge while off, or turn it on while connected to tv.
If this works then most likely the xd+ will be setup the same way and we can release some type of DIY dock with a list of confirmed working cables n whatnot. I highly doubt that they are going to decide to add usb-c to the new design so this is probably our best bet.