forgive the dopey question, but I am not all that familiar with the more electronic side of the gear. I am using 9V alkalines in my PS-2 and AD-20, and I'm sure I can get about 3 shows out of them, but I'm not willing to take a chance and start a new show with a battery that may not necessarily make it through. Of course, I'm sick of throwing away batteries that most likely could do another show.
How would I test the 9V to see if they have enough juice left? Would a cheap rat shack multimeter (
like this) do the trick? And then from there I guess I could see what voltage triggers the low batter light, and just make sure I'm well above before starting a show? Thanks!!