Hey guys, I wasn't trying to be inflammatory here. I just wanted to point out that the VoltMagic is a far better product that the VoltWatch. And yes it has a price tag to match. It's not appropriate for all planes, but does have it's place. Thanks to Mikecam for pointing out the advantages of the Voltmagic. They really are great little units that do much more than display the battery voltage. Check out the website and decide if one would be right for your application. http://www.voltmagic.com/index.htm .
Paul