Home / Shop / Batteries, Testers and Tools / Activair Battery Tester View cart “Rayovac Proline Batteries Size 13” 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 10 Yellow $20.00 Add to cart Hearing Aid Dehumidifier (Fish) $9.95 Add to cart 40 Rayovac Premium Batteries Size: 312 Brown $20.00 Read more Westone TRU Hearing Protection $25.00 Add to cart