Batt-O-Meter

Here’s a great idea for the Sound Guy or Guitarist in your life.  The Batt-O-Meter by Keith McMillen Instruments will tell you how much life you’ve got left on a battery without having to take it out of your guitar or effects pedal.  Basically you can check a 9 volt or 1.5 volt battery by plugging this guy into a quarter-inch jack of a guitar pedal or guitar.  It can tell you how many volts the battery is putting out, and how long it will last.  Pretty neat trick.

This would be great for Sound Guy toolboxes or Guitarist gig kits.  It’ll also save you some money being more efficient with your batteries.