Buy Power One Hearing Aid Batteries - Size 312 – HearingDirect
PowerOne Evolution Hearing Aid Batteries - Zinc Air Hearing Aid Batteries with Improved Battery Life - 60 Batteries - Size 10, 13, 312 & 675 - with Liberty Hearing Aid Battery Keychain | LIBERTY Health Supply
Powerone P312 Hearing aid battery (rechargeable) ZA312 NiMH 23 mAh 1.2 V 2 pc(s) | Conrad.com
Power One ACCU plus p312 rechargable batteries, , 1 Pack (2 Batteries) - Walmart.com