Hi!

Battery.el offers nice features about laptop status, however, my Acer
Aspire 1680 gentoo 2006.1 with a 2.6.18 kernel using ACPI is breaking
some parts of the file detections in battery.el: the ac_adapter is
called AC0.

I propose the following change that factor some part of the code.

I don't think the thermometers have been put in a special order in the
code, so I believe my patch doesn't break anything.

TIA !