Duracell Hearing Aid batteries are 1.4 Volt

They are supplied as a pack of 6 batteries.

These batteries all have Easytabs for easy fitting.

They have Zinc air chemistry which ensures long lasting power.

Hearing aid batteries come in four common sizes with universal color coding 10, 13, 312 and 675. To identify the size, most manufacturers use an industry standard color code on their zinc air tabs and packaging yellow for size 10, brown for size 312 (most common in the US), orange for size 13 and blue for Size 675. The most common type is the zinc-air button battery. Heres a general guideline for how long hearing aid batteries last by size

Size Lifetime

10.   Three to seven days

312.  Three to 10 days

13.    Six to 14 days

675. Nine to 20 days