Home / Shop / Batteries, Testers and Tools / Activair Battery Tester View cart “Westone TRU Hearing Protection” has been added to your cart. $15.00 Activair Battery Tester Hearing aid battery tester Analog reading shows battery life Features a battery storage compartment Activair Battery Tester quantity Add to cart SKU: ATEST Category: Batteries, Testers and Tools Tag: Copied From Estes Related products Hearing Aid Battery Tester $7.99 Add to cart 40 Rayovac Premium Batteries: Size 675 Blue $20.00 Add to cart Hearing Aid Dehumidifier (Duck) $9.95 Add to cart Stay Dri Dehumidifier Jar $9.95 Add to cart