Somebody didn't take their ritallin today.

I saw no insults, curses, flames, degradations or embarassing comments in the original question.

I believe the reason most Alpha 4 owners do not want to be bothered with silly owner questions, if that is in fact true, is that they don't know the answers. The Alpha 4 seems like a device designed to take all the thinking out of battery management. Nothing wrong with that, of course.

Hank...when you say charger, do you mean power supply? Like a little wall wart that transformer 117V AC into 10 or 9V AC?

If so, and one calls for 9V and the other calls for 10V, the units are probably built just a bit differently (different value resistors and capacitors and all that kinda good electro-wizzamajigms). Just be sure not to mix up the two power supplies and you'll be fine. Mixing them up would probably be very bad.

It might be a good idea to mark them with colored tape or something.

If I'm way off base with this...someone like Red will step in and smack me around (verbally speaking, of course) before giving you the right answer.