Products : Batt-O-Meter : FAQ

Batt-O-Meter KMI wins two Best Of Show @ NAMM: SoftStep and Batt-O-Meter Quick video
  1. What is Batt-O-Meter?

    Batt-O-Meter is a small device that allows musicians to test the remaining hours of battery life and voltage of 9 volt batteries while they are still inside gear with a 1/4" plug.
  2. Where can I buy a Batt-O-Meter?

    You can buy the Batt-O-Meter from our online store or by contacting one of our trade partners.
  3. What makes Batt-O-Meter work?

    Stomp boxes and instruments use a standard stereo 1/4” phone jack and devices sense the insertion of the 1/4” mono plug to turn on the power. Batt-O-Meter measures the Voltage and Current to let you know how many more hours the battery will work. A micro-processor within the unit allows the device to intelligently determine the different loads that can be put on the battery and calculate the power in hours remaining. This eliminates the need for extra buttons and adaptors, and makes the Batt-O-Meter simple to use.
  4. What devices does the Batt-O-Meter work with?

    The Batt-O-Meter works with almost any active instrument pickup or effects unit (stompboxes and other floor effects) that require a 9 volt battery to operate, and is turned on when a standard 1/4" cable is plugged into it. The Batt-O-Meter can test stand-alone batteries: 9V, 1.5V (AAA, AA), and 3V. It does this, by automatically placing the battery under an appropriate load to simulate real world usage. It works with Alkaline, Rechargable (ie. Lithium-ion, NiCd, NiMH), and old school Carbon-Zinc batteries.
  5. What is the Power Probe?

    The Power Probe is not your normal 1/4 inch plug. It is a gold plated 1/4" plug specially designed to allow the Batt-O-Meter to test the unit without turning it on. This allows for far more accurate readings with a wide array of devices. In certain cases, for example with certain models of acoustic/electric guitars, the probe must be used discerningly, i.e. it must be inserted half or three-quarters of the way into the input jack to get an accurate reading.
  6. Can the Batt-O-Meter check its own battery?

    Yes! The Batt-O-Meter runs with on a 9 volt battery. Holding down the power button puts the device into self-test mode.
  7. Why hasn't anyone done this or thought of this before?

    It was almost impossible to create the Batt-O-Meter. The Batt-O-Meter required the equivalent of an ultra high impedance instrumentation front end with an auto sensing - auto scaling computer controlled current and voltage measurement system. Doing this with $1000's of test gear is hard enough - doing it for the price of a few batteries was insane.
  8. Can I use an interconnect adapter with the 1/4" Power Probe?

    Probably not. The Power Probe works on devices that are turned on when you plug a cable into it. This is common with active preamps and pedals that use a 1/4" connection. If you have a device with an on/off switch, a 1/8" plug, an XLR connection, or a complex wiring of a 1/4" plug, then the batteries will probably need to be removed in order to test using the Batt-O-Meter.
  9. What does the error message "pL6" mean?

    If the probe is used on the incorrect plug of the device you are testing, or if it is dirty, the Batt-O-Meter will self-test and display a plug fail. You can simulate this error by holding the probe in your hand while running the self-test.

    Try testing the battery from the other plug and ensure that both the probe and plug are clean and that nothing is obstructing proper contact between the two.
  10. My device has a new battery and the voltage reads high on the Batt-O-Meter but the hours left of use are inconsistent with previous tests.

    Make sure the type of chemistry selected corresponds to the battery you are testing. If the chemistry selected is incorrect, there will be a slight difference in voltage but there will be a large discrepancy in hours left of use of a device or percentage indicating internal battery level.
  11. Why does my very low 9 volt batter read at 100%?

    The Batt-O-Meter can test 3 volt batteries. If you test a very low 9 volt battery, it may appear as a good 3 volt battery.
  12. I have two brand new 9 volt batteries in my instrument, adding up to 18 volts. Why does the Batt-O-Meter tell me I only have 10.23 volts left?

    The highest voltage the Batt-O-Meter can test is 10.23 volts. If you have a device/instrument that runs on two or more 9 volt batteries, the Batt-O-Meter will display the highest voltage it can recognize (10.23 volts), although the voltage may be higher.
  13. The display guide was destroyed when I opened the packaging. Where can I get a new one?

    That same display guide printed on the box hidden behind the product can be found on page 3 of the Batt-O-Meter manual, located on our downloads page.
  14. How come my device shows hundreds of hours?

    It's possible that a 9 volt will power a simple circuit for over a thousand hours. If you are getting a reading, then that means the Batt-O-meter was able to check the battery AND check the load, so it's likely that if you keep the pedal or active pickup on the current settings then the number of hours provided by the Batt-O-Meter is accurate.
  15. If I change the settings on my pedal (or active preamp) the Batt-O-Meter changes the number of hours displayed. Why is that?

    The Batt-O-Meter is comparing the 9 volt % life against the current voltage load of your pedal. If you change the settings, you're likely to change the load and the battery consumption needs of your device. In other words, if you crank every knob to eleven, that will consume battery life faster (and shorten the hours of playing time) than if you were to leave the pedal on bypass. Therefore, leave your settings the way you plan on using it to get the most accurate reading from the Batt-O-Meter.
  16. Which switch should I use to test Lithium batteries?

    On the side of the Batt-O-Meter is a switch with three options: Alkaline, Rechargeable, and Carbon Zinc. When testing Lithium batteries set the switch to "Rechargeable."
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