Have you ever had a device that uses two or more batteries at once? After a certain point, you’ll be faced with a situation where one or all of those batteries may be duds. The only problem is that it may not be all of the batteries, but you have no real way of telling.
Sure, you could take out one of the old batteries and test the other old one alongside a new one, but that’s going to take time, and there’s no way of knowing how long it will last you. The Ziotek Digital Battery Checker will make sure that you know how much juice every battery holds. It runs on a AAA battery, and can test AAA, AA, C, D, and 1.5V coin batteries. The LCD screen will show you whether the subject it is testing has good, weak, or poor energy levels left. This $10 handheld device will be a useful tool in taking the guesswork out of using batteries.