Battery Tester Checker, Universal Small Battery Tester for AAA AA C D 9V 1.5V, Button Cell Batteries Checker - Small Volt Checker for All Batteries - 1 Pack

Took a chance buying these, but they're wonderful. Easy to use and works with no effort. They are reasonable, so I got one for 3 locations in our house so we don't have to run and go look for one whenever it's needed. It's good to be able to test batteries when I remove them to see if they really are no longer charging. They are versatile and you can test so many battery sizes with one simple tool. Terrific!

Feels a bit cheap, but I can’t complain since it works great! We’ve had it for a while now and have used it quite a bit to check battery juice. Nice and compact, too.

This tester isn’t the best quality, but as often as I use it, it’s worth the $. The metal needed to line up with the batteries is small and sometimes a bit tricky to use. I don’t feel a child could help/use this tester very well. It checks a large variety of batteries. I believe the next time I need a battery tester tho, I’ll look for a better quality.

Simple yet fully functional. This battery tester will work for most battery types.

This actually works very well. I was utterly surprised given the price. Within 5 minutes of using it this thing had already paid for itself because it discovered five or six batteries that I thought were dead that were in fact not. Its easy to use and read.

Works great! A great price!

If I seriously wanted to know what was going on with a battery this is not a very adequate item. It comes with no directions, and is hard to use with old arthritic hands. It was adequate for sorting out a bag of batteries that contained both good and exhausted batteries.

What is the best battery tester ever? It works really well and tell how much juice has left in battery?