Hearing Aid Activair Battery Tester with Separate Size Slots for Each Type of Battery

This is very easy and functional device to use. I strongly recommend this product. Four different batteries sizes can be tested.

I had purchased another battery checker. And at first I thought it worked well. But after a couple of days it quit working. This one is easy to use and easy to read the results.

Great for hearing aid batteries. I find alot of our hearing aid batteries are bad right out of the package. And that was the problem with my hearing aids. Bad batteries!

I have used this for over one month now to test my hearing aid batteries. I wanted to be able to confirm that batteries were indeed exhausted when my hearing aid signaled that the battery was depleted and that batteries that I had stored for a while were still good before using them. What I found was that after my hearing aid had shut down due to exhaustion of the battery this tester still showed it as in the good range. I then tested the same battery with a larger tester that I have and this confirmed that the battery was below usable range. So this tester seems to be inaccurate compared to three other sources: my hearing aid, my phone program for the hearing aid and a separate battery tester.

This is a simple tester for those smaller batteries that get bypassed on not knowing if its still good or not. I like the analog over the digital meter battery testers. I gave it four stars because it cannot test my watch battery or my computer larger disk battery. But overall, it is a good tester for those batteries that can be tested. Quick shipping, thanks.

I use this to help my students tell if their hearing aid battery is good or not. There are electronic versions of this as well, but this one never needs batteries of its own or needs to be charged. It's simple and easy to use. My students like watching the needle move when they put their battery in. A bonus is they incidentally learn what size battery they need just by virtue of choosing the correct slot to insert their battery into. Incidental learning sticks around in their memory a lot better than direct teaching. This is cheap, easy and accurate to use, and never runs out of power - a win all around.

A good reliable source if you’re doubting the power of your batteries

Just slide the battery in and press the top of the case and the reading is instant and clear. This is much better than the battery testers that also take the larger sizes. Such testers are great for the larger batteries but, beacuse they drain too much current for the little hearing aid batteries, their readings last lnoy a short, short part of a second before they pass into the Not Good zone.