Home / Shop / Batteries, Testers and Tools / Rayovac Proline Batteries Size 312 View cart “Hearing Aid Dehumidifier (Duck)” has been added to your cart. $27.99 Rayovac Proline Batteries Size 312Size 312 Rayovac Proline (brown tab), Mercury Free Batteries. 3 Cards of 16 batteries per card. 48 Total. Out of stock SKU: IM312-48 Category: Batteries, Testers and Tools Tag: Copied From Estes Related products Hearing Aid Battery Caddy $3.99 Add to cart Decibullz Custom Molded Earplugs $25.99 Select options PockeTalker 2.0 with Headphones + Dual Ear Buds $229.00 Add to cart Westone TRU Hearing Protection $25.00 Add to cart