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Keith McMillen Instruments Batt-O-Meter Reviews

3.5 stars based on 5 customer reviews
Questions about the Keith McMillen Instruments Batt-O-Meter?

Questions about the Keith McMillen Instruments Batt-O-Meter?

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  • Richard
    from Omaha, NE September 19, 2013Music Background:
    Performing Guitarist

    Everyone Needs One

    You've gotta have one of these. It will pay for itself in a month on saved batteries. Have already used it to catch "brand new" batteries straight out of a new package that were actually at 80% and would have failed in my wireless during the show. I check every battery on our stage with it before shows now- wireless, pedals, etc. The peace of mind is invaluable. If you use batteries, you need this. And its really pretty cheap for what it does for you.

  • KB Gunn
    from NC August 6, 2010Music Background:
    Recording Engineer, Live Sound Engineer, Pro Musician

    Senior Moment

    When I first got this unit a couple of weeks ago, I tried to use it with different instruments. It would not work. When I decided to put reading glasses on, I saw that it had a compartment for a 9 volt battery. I have another battery tester that requires no power, so I thought this would function without a power source as well. Once I got it working it was fine. One problem is that to test AA and AAA batteries, it is hard to hold the battery in the correct position and still push in the test button. That only reduces the rating by half a star. It is a useful diagnostic instrument for checking the 9 volt in my Wechter Pathfinder guitar and my Fernandes Retro Rocket with sustainer. Even though I use pedals with a power supply there are times I will be using batteries for those, so it was a great investment

  • Customer
    from Cleveland December 12, 2016

    Only 9 v.

    Fine for acoustic electric guitars that use a 9v. battery, but won't work for my Epiphone Masterbuilt AJ45 (great guitar, amazing value) which uses two 1.5 batteries in series for a total of 3 volts.

  • Todd
    from Cleveland November 24, 2016

    Only for 9v Preamp Guitars

    Great idea. But does not work on the 3v preamp on my Epiphone Masterbult AJ45. It uses two 1.5 v button batteries to give 3v. Check your acoustic electric preamp.

  • Michael Ricks
    from Callahan, FL December 10, 2016

    It's great...unless you own high-end guitars

    It works fine on any battery I manually remove from my instruments but I can't get it to work using the plug on the instrument. I tried it on a few 800 series Taylors and a Fender American Deluxe Bass. I have learned that the bass is an 18v instrument utilizing 2 9v so I understand the issue there. But my taylor is a 9v instrument. It worked on a pedal I have but that doesn't help me since that is normally powered by a pedal board anyway. Disappointed. This should probably be labeled as a pedal checker since the wiring in guitars can be drastically different even within brands. I gave it two stars because it DOES work, as long as I remove my battery first.

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