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Gardner audiology has tested quite a few hearing aid battery testers over the year and this one is the best value and it tests all sizes of hearing aid batteries.
People often contact us when they "discover" their hearing aid batteries are not. If you simply take a multimeter (or battery tester) and connect the leads to each .
Digital Hearing Aid Battery Tester. Description; Reviews; Questions & Answers. A great little gadget to test if your hearing aid battery has any life left.