Rayovac Battery tester Hearing Aid Reading range (battery testers) 1.2 V, 1.55 V Rechargeable, Battery 209476

Quick and easy testing any zinc-air hearing aid batteries.
Often, the batteries when cleaning or not in use of the hearing aid can be removed and stored separately. They are often forgotten and eventually disposed of. This tester allows you to test your batteries and to select.
In addition, it is fitted with a key ring and a practical battery compartment for two batteries. So that you always have replacement batteries on hand.

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