I bought one of these. Read the instructions carefully (cause I didn't), and ONLY use it to charge 1.0A devices. I tried to use it to charge my IPAD (2.1A), and it let out the magic white smoke in about 10 minutes... and was so hot I could smell the plastic melting.

Too bad they couldn't put in a protection circuit to prevent that, because otherwise, that one was pretty much exactly what I was looking for.