well, since I'm a man, and an engineer, I don't need no stinkin' manuals!! hahaha
I opened my upgraded HC-2b, pressed the power button, got to the main screen, and plugged the RE-supplied wall wart and USB cable in. since there was no visible sign of charging on the main screen, I of course assumed that either the wall wart or cable was bad (of course the odds of that are about zero).
in the pursuit of science, I tried a few other approaches. just by chance I tried all the following with the HC powered off: a Blackberry charger works (altho it is 700 ma not 1a). a plain old 1a usb charger works with the RE cable. the RE charger works with a plain 'ol usb cable (although I acknowledge that all plain 'ol usb cables are created differently). and of course the RE charger works with the RE cable--IF I HAD READ THE MANUAL and learned that the HC needs to be powered off before plugging the charger in, then the charging screen appears.
so this afternoon while watching the hapless Colts get clubbed by the Titans I'll read the HC manual and the RPA manual.
ken