I'm curious if I can use any of the batteries out there labeled 'replacement for Canon BP-911/BP-915'? Are they all basically the same? They vary greatly in price so I'm curious what the difference is? Do some not fit properly?

Also, anyone know of a compact charger for a single battery? I use the twin Hahnel in the office, but a smaller travel version would be nice, preferably with a built-in plug, not a cord.
Thanks!

I have a travel charger dedicated for Canon BP 911 / 915 / 930 / 945. Works just fine and it's as much as 9 bucks.

Oh and I got a replacement battery you've mentioned from my dealer, he didn't have the original one (no comment on that..). No problems with the battery so far.