Activair Battery Tester Posted on April 27, 2020 by Elevate Audiology View cart “Single Battery Caddy with Chain” has been added to your cart. $15.40 Activair Battery Tester quantity Add to cart SKU: ATEST Category: Battery Testers & Tools Description Description Hearing aid battery tester; Analog reading shows battery life; Features a battery storage compartment Related products Single Battery Caddy with Chain $5.50 Add to cart Digital Battery Tester $10.25 Add to cart Battery Easy Removal Tool $7.65 Add to cart