Our ingenious tester gets rid of the guesswork, so you don’t get your new and old batteries mixed up. Get rid of the guesswork and never be without fresh batteries!

The Keyring Battery Tester is ideal for testing all five sizes of hearing aid batteries, letting you know when your hearing aid battery needs replacing.

Simple to use, lightweight yet strong and durable, fits into your pocket, and it even has storage space for 2 spare batteries.

The convenient keyring design means it’s always at hand whenever & wherever you are.

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