A typical hearing aid battery for most common digital hearing aids are "zinc-air" types. The sizes of a general hearing aid battery is listed below along with their standard number and colour codes.
Half Price Hearing Aid Battery
Prestige Hearing supply a quality digital hearing aid battery at less than 35 pence each and in 4 sizes:
Size 10: YELLOW
Size 13: ORANGE
Size 312: BROWN
Size 675: BLUE
If you are a supplier of a quality hearing aid battery and would like to list your company product or service, contact sales@eurohearingaids.com.