60 Pack!!Size 10 USA-Made Hearing Aid Batteries by Renata These Renata hearing aid batteries are replacement batteries for size 10 hearing aid batteries. These hearing aid batteries are 1.45 volts. There are 60 batteries total per box and they have a 3 year shelf life, but when activated (tab is removed) shelf life becomes much shorter.Voltage: 1.45 Volt Type: Zinc Air