Since I started this thread and reading all the differences in opinions, I decided to outfit the whole fleet with a voltwatch. I guess 10.00 is cheap insurance for a plane. Some of the planes in my fleet are getting some time on them and I know batteries don't last forever. I also like the look of some bling on the dash of my planes. Gives the pilot something to look at as well while they're yanking and banking on the stick. I know that some of the responses got a bit touchy, but as long as we agree to disagree I think it's all good. I'm now getting into the habit of not only looking at my voltwatch before and after a flight, but I'm also using my expanded voltmeter more.