Rayovac 312 Zinc Air Hearing Aid Batteries - 180mAh - 8 Piece Blister Pack, RAYOVAC-312-8
Amazon.com: Duracell Hearing Aid Batteries Brown Size 312, 24 Count Pack, 312A Size Hearing Aid Battery with Long-lasting Power, Extra-Long EasyTab Install for Hearing Aid Devices : Electronics
Kirkland Signature Hearing Aid Batteries 48 Pack (Size 312)