Anyone?
I've answered the third question. Took a chance and connected the Power Bank using the eBay Peakcloudy charger cable and it works fine. I suspect that most of the aftermarket Axim USB charger cables are wired the same, but can only vouch for the one from the Peakcloudy kit. (Don't shout at me if you fry your Axim using another one).
Anyone have insight into either or both of the first two questions above?