Battery operated hearing aids come in four sizes, the easiest way to identify the correct one is through the colour shown on your battery packet as shown in the table below:
Size
Colour
312
Brown
675
Blue
10
Yellow
13
Orange
Pensioner's Batteries Agreement
If you are a pensioner card holder, you are entitled to sign a batteries agreement to get 1 year’s worth of batteries (also known as a Maintenance Agreement).
The cost to enter this agreement is usually waived (for a reasonable amount of battery usage).