Keith McMillen Batt-O-Meter battery tester

keith mcmillenKeith McMillen presented its new innovative product – the Batt-O-Meter which is the first battery tester for musicians.

Frequently described as ‘indispensable’, Batt-O-Meter saves musicians from that dreaded moment when a battery dies during a gig by telling you the hours of life remaining in your batteries without removing them from your gear. Retailers are excited to now be shipping this necessary and useful device to their customers at an affordable price.

Batt-O-Meter is a simple to use device, yet so much more than a voltmeter or multimeter. When plugged into a ΒΌ” jack, it tells the user what they want to know: how many hours of usage are left until their battery is going to die. This provides invaluable peace of mind to anyone that worries about a dead battery marring his or her performance and saves them from the costly habit of replacing healthy batteries ‘just in case’. It is also crucial for gear techs that want to know the status of the batteries onstage without wasting time opening up all the gear. Batt-O-Meter also tells you the voltage being delivered and can test stand-alone 1.5V and 9V batteries. A side switch selects from alkaline, carbon zinc, and rechargeable chemistries, so whatever type of battery you use, Batt-O-Meter has you covered.

More information about the Batt-O-Meter: Keith McMillen

2 thoughts on “Keith McMillen Batt-O-Meter battery tester”

  1. Unless you use it on your own gear and absolutely positively know which type of batteries you use, you’ll still have to open up the piece of gear to see which battery it’s got, in order to select the correct type. Doesn’t that kinda defeat the point?

    Also, I’m curious as to how it compensates for the different current draw of the various circuits out there. The websites mentions placing the battery “under an appropriate load” to “simulate real world usage”, but that doesn’t sound very trustworthy to me.

    Interesting idea nonetheless.

  2. Hi,

    People are pretty good at remembering what battery they put in a device. If you are using rechargeable you definitely know it (becuase you had to charge it). Almost everyone else uses Alkaline.

    We measure the current draw of each of the devices we are testing, so this is the actual “real world” load. The Batt-O-Meter auto-ranges current loads and measurment from 15 uA to 150 mA to cover everything from a single FET pre-amp to a digital reverb pedal.

    Our resolution is better than .1% and basic accuracy is guaranteed /- 2%. The current consumption data is used along with voltage measurement to index into a 1024 entry table, one table for each of the battery chemistries.

    I hope this helps.


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