> > Can't you just trust that the Ah rating for the battery is correct ? > > I do trust the battery rating Sorry, didn't mean to imply that you can't do the maths. I was assuming that you'd seen the manufacturer's discharge data but for some reason still wanted to do your own testing -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu