Home / Shop / Batteries, Testers and Tools / Activair Battery Tester View cart “Westone DefendEar Digital Shooter” 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 40 Rayovac Premium Batteries: Size 13 Orange $20.00 Add to cart Clarity D704 Dect 6.0 Cordless $99.95 Add to cart ZPower 312 $40.00 Read more 40 Rayovac Premium Batteries Size: 312 Brown $20.00 Read more