Home / Shop / Batteries, Testers and Tools / Rayovac Proline Batteries Size 312 View cart “Activair Battery Tester” 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 Battery Easy $9.99 Read more PockeTalker 2.0 with Headphones + Dual Ear Buds $229.00 Add to cart Single Battery Caddy with Chain $4.00 Add to cart Rayovac Proline 675 Hearing Aid Batteries $45.00 Add to cart