Yeah the 8 pack of AA batteries would be more likely a winner than the A23. However 2 9V batteries might be better still. I've shorted those out before and measured 5A (for a little bit, then it drops).Ah, I was thinking .1uf because I thought you meant it was for something else.
I was originally thinking an A23 battery. Might be too small though. I'm guessing a pair of 4-pack series AA holders in series would be better?