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Keith McMillen Instruments Batt-O-Meter Battery Tester  

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Keith McMillen Instruments

Shows the hours of life remaining on your stomboxes and active pickups without removing the battery.

Plug the Batt-O-Meter Battery Tester into virtually any battery-operated device with a 1/4" jack input and find out if and when to change its battery. Stop wasting time and money; don't guess when to change batteries; know with the Batt-O-Meter.

The Batt-O-Meter Battery Tester looks inside your active pickup instruments and 9-volt devices to measure voltage and remaining hours of use. Fast, accurate, and easy to use, the Batt-O-Meter: saves you from risk and stress of dead batteries before a performance. You'll also save money by extending the life of each battery, and save time by checking battery life before taking things apart. Feel better knowing that you're helping the environment by discarding fewer batteries.

The Keith McMillen Instruments' Batt-O-Meter also checks hard-to-reach batteries by plugging into the 1/4" input found on most guitars, basses and effects pedals.

Use the Batt-O-Meter battery tester to quickly and accurately measure how many volts a battery is delivering, the number of hours left before the power runs out, and the remaining life in any 1.5-volt or 9-volt battery. Just plug the gold-plated Power Probe into the 1/4" input on most instruments and effects pedals to test the life remaining in hard-to-reach batteries.

Test more battery types with increased precision with the Batt-O-Meter's convenient slide switch that differentiates between alkaline, rechargeable, and carbon zinc batteries. The right-angle, 1/4" jack can check a hard-to-reach battery still inside your equipment.

And, yes, Mr. Smarty Pants, the Batt-O-Meter performs a self-test of its internal battery and displays the percentage of battery life left.

Features

Order today to get the world's first battery tester for musicians.

 

Batt-O-Meter Battery Tester Specifications:

  • Requires 9-volt battery; not included
Customer Reviews
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Review Snapshot®

by PowerReviews
Keith McMillen InstrumentsBatt-O-Meter Battery Tester
 
2.9

(based on 15 reviews)

Ratings Distribution

  • 5 Stars

     

    (5)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (3)

  • 2 Stars

     

    (3)

  • 1 Stars

     

    (4)

0%

of respondents would recommend this to a friend.

Pros

    Cons

      Best Uses

          • Reviewer Profile:
          • Quality oriented (5)
          • Primary use:
          • Personal (4)
          • Was this a gift?:
          • No (5)

        Most Liked Positive Review

         

        Great product, simple and very valuable

        Very simple to use and very helpful to have. I own a pedal board with a few different devices that I sometimes like to pull off and use individually. Among these are a boss...Read complete review

        Very simple to use and very helpful to have. I own a pedal board with a few different devices that I sometimes like to pull off and use individually. Among these are a boss tuner and a dunlop wah. The batt-o-meter tests them and my other pedals accurately. It's good to know that I don't have to shoot in the dark and guess when I need to change batteries!I also use the batt-o-meter as a battery tester. You can test AA and other batteries with it, so I'll use it to check the juice on my remote control batteries or whatever else around the house. The device is very small so it's easy to use pretty much anywhere. Great device, definitely worth the money.

        VS

        Most Liked Negative Review

         

        Doesn't work in all active basses

        Purchased this to check the battery in my active bass (Ibanez SR505). Worked fine on external batteries but gave an error when trying to check the battery in my bass. Exchanged it for...Read complete review

        Purchased this to check the battery in my active bass (Ibanez SR505). Worked fine on external batteries but gave an error when trying to check the battery in my bass. Exchanged it for another - same problem. I have heard through the grapevine that this does not actually work on all active basses. Disappointing - I'm going to return it.

        Reviewed by 15 customers

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        3.0

        Doesn't work in 2 of my 4 basses

        By C_Scott

        from Detroit, MI

        About Me Quality Oriented

        Verified Buyer

        Pros

          Cons

            Best Uses

              Comments about Keith McMillen Instruments Batt-O-Meter Battery Tester:

              Just as so many others have said, this does not work on all active basses. It doesn't work on my Alembic Spoiler, or my Ernie Ball Stingray. It does, however, work on both of my Fender's which are the ones I gig with the most, so hopefully it will be worth it. Maybe it works well with pedals, (I don't use any), but I would think with all the negative press Keith McMillen is getting on his product from guitar/bass players, he would go back to the drawing board, and get it right.

              • Was this a gift?:
              • No

              Comment on this review

               
              1.0

              Works.......NOT!!!!

              By lwa1609

              from New Mexico

              About Me Quality Oriented

              Pros

                Cons

                • Inconsistent Performance

                Best Uses

                  Comments about Keith McMillen Instruments Batt-O-Meter Battery Tester:

                  Bought this to easily check the battery in my Gibson Songwriter which is buried inside. Oops, doesn't work on the Gibson. Nor does it work on 6 of the 7 guitars I own! Taylors, Gibsons, Martins, or Pimentel. Only one guitar, a Yamaha CPX15S with an LR Baggs preamp proved to work correctly with the Batt-O-Meter! Also, doesn't work with my para DI. About all it is good for is a hard to use voltmeter if you take the battery out!!!!
                  Really disappointed!

                  • Primary use:
                  • Personal
                  • Was this a gift?:
                  • No

                  Comment on this review

                   
                  3.0

                  Pretty good product.

                  By Gene R

                  from Laurel, MD

                  About Me Quality Oriented

                  Ask me a question

                  Verified Buyer

                  Pros

                  • Able To View Battery Life

                  Cons

                  • Can't Insert All The Way

                  Best Uses

                    Comments about Keith McMillen Instruments Batt-O-Meter Battery Tester:

                    I was disappointed when I first got the meter because when I pushed it in all the way in my guitar, I didn't give a reading. However after reading another review from another customer who bought the meter, I discovered that if I partially pushed it in, it would give a reading although the readings aren't consistent. I'm hoping they are close enough to be fairly accurate.

                    • Primary use:
                    • Personal
                    • Was this a gift?:
                    • No

                    Comment on this review

                     
                    2.0

                    Disappointed

                    By Gene R

                    from Laurel, MD

                    About Me Quality Oriented

                    Ask me a question

                    Pros

                    • none

                    Cons

                    • Have To Take Battery Out

                    Best Uses

                    • Not Worth The Money

                    Comments about Keith McMillen Instruments Batt-O-Meter Battery Tester:

                    I just got this meter and I was disappointed because I thought I could just plug it into my active Soundgear 405QM bass guitar and get a reading on the 9-Volt battery. As it turned out, I have to take the battery out of the guitar and manually test the battery with the meter. I bought this item for convenience and it certainly is not convenient.

                    • Primary use:
                    • Personal
                    • Was this a gift?:
                    • No

                    Comment on this review

                    (2 of 2 customers found this review helpful)

                     
                    1.0

                    Doesn't work in all active basses

                    By Tim

                    from Santa Rosa, CA

                    About Me Quality Oriented

                    Verified Buyer

                    Pros

                      Cons

                      • Inconsistent Performance

                      Best Uses

                        Comments about Keith McMillen Instruments Batt-O-Meter Battery Tester:

                        Purchased this to check the battery in my active bass (Ibanez SR505). Worked fine on external batteries but gave an error when trying to check the battery in my bass. Exchanged it for another - same problem. I have heard through the grapevine that this does not actually work on all active basses. Disappointing - I'm going to return it.

                        • Primary use:
                        • Personal
                        • Was this a gift?:
                        • No

                        Comment on this review

                        (2 of 2 customers found this review helpful)

                         
                        2.0

                        works sometimes

                        By Zippy-9IfRS

                        from Illinois

                        Comments about Keith McMillen Instruments Batt-O-Meter Battery Tester:

                        I expected this thing to work on all my guitars but it does not. I watched a vid about this problem on youtube and figured it was them and would not be me. I was wrong.
                        I have 5 electic acoustic guitars and it works on two of them--one other one also but only if I wiggle it to a perfect spot. I like the idea of it but the contact is not good enough to touch what it needs to touch on all guitars.
                        It needs improvement but after all this time (two years) I have seen no desigh changes.
                        So, I would only recommend it if you can accept being able to check some guitars and not others. Which ones? Who knows!

                        Comment on this review

                         
                        2.0

                        Kind of sort of works

                        Comments about Keith McMillen Instruments Batt-O-Meter Battery Tester:

                        Bought so I'd be for-sure for-sure that i dont need to change a battery during a gig. This unit does not gain my confidence. Gave me two totally different readings on my Modulus 9V bass preamp. Did not work at all on my acoustic electric guitar. Seems to work on some other instruments, but I feel like i dont really know the score with this device. Seems like it needs a tech revision. Great idea though.

                        Comment on this review

                         
                        5.0

                        definately worth it.

                        By PleaseMrBassMan

                        from Los Angeles, Ca

                        Comments about Keith McMillen Instruments Batt-O-Meter Battery Tester:

                        as a musician and A/V tech responsible for a couple dozen battery powered units, I was tired of all the screwing and unscrewing and time spent testing gear.I was skeptical at first, but the Batt-o-meter is so handy and intelligent! I am really impressed. It even tells you how many hours are left in the battery! really cool. super useful.since I started using it last month, I've already saved myself more than the cost of the unit in still-useful batteries.also, better battery conservation is good for the environment. so get a Batt-o-meter! buy less batteries!save time! save the world! very cool.

                        Comment on this review

                         
                        1.0

                        Does NOT work on Taylor guitars

                        By Active Musician-mmxFZ

                        from Jacksonville, Florida

                        Comments about Keith McMillen Instruments Batt-O-Meter Battery Tester:

                        What a great idea! If it only worked. I bought the Batt-O-Meter to test the battery in my gigging guitar, a Taylor 814ce. It does not work. Tried it in a friend's 114ce. It does not work. Contacted McMillen, great comopany to work with, but they suggested to return it. The writeup implies that the BOM will work on most guitars. I can not get it to work my Taylors.

                        Comment on this review

                         
                        5.0

                        Don't Worry, Save Money

                        By hulkhands

                        from Brooklyn, NY

                        Comments about Keith McMillen Instruments Batt-O-Meter Battery Tester:

                        I use a lot of vintage effects, some of which are a pain to open to check/change batteries. I got the Battometer so I'd know how much power was left in my pedals without having to open them up. Somehow the Battometer figures out how many hours are left in the pedal, which is brilliant! I used to throw away a lot of batteries that were "half-good" according to my old tester, since I never knew what that meant. Now that I know the hours left, I haven't had to change them as much and it's one less thing to worry about.

                        Comment on this review

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