Keith McMillen Batt-o-Meter

I use this everywhere for all my batteries, instruments, and effects. I even periodically take out all the rechargeable and other batteries around the house to check their charge and either recharge them or get rid of old ones. I honestly have no complaints about this device and I now can't imagine what I would do without it.

I'm glad to be able to measure the batteries in my guitars and boxes. For some reason it won't work on my Taylor guitar's ES2 electronics.

Title says it all.

I've got a few pedals, and active guitars, and on tour, we change batteries all the time, but with this unit, I could monitor the batteries daily, to make sure that I only changed batteries when needed. If you're paying for batteries yourself, you really should own one of these. It will save you a lot of money over the years, and perhaps even more importantly, it will save you the embaressment of having to change batteries on stage.

A really useful tool for quickly checking the charge state within the 9V battery which powers your internal preamp in your bass or guitar. You just insert the jack plug into the socket on your instrument and press one button for an instant read-out.

It also works on other battery types and can test them outside of the instrument too. ;o)

It can even self check!

Got this to keep an eye on the batteries in my active basses, and it works a treat. So simple to use, just took a few minutes to understand the various display messages. And the ability to text external batteries is a bonus!

It will also test batteries in effects pedals. Brilliant piece of kit!

Very useful accessory for use with any type of battery powered device such as effect pedals, etc. Even works with your guitar to test the battery of your active pickups! Great for checking your guitar battery before a gig, etc. Can also be used to check 9 volt batteries individually and also works with different types of batteries (alkaline, etc).