675 'Blue' Hearing Aid Batteries
Zinc Air batteries are activated by removing the tab allowing air to flow into the battery. The reaction is then started and the battery will then power the hearing aid. Most modern hearing aids use the simple colour compatibility system and any hearing aid using Blue batteries will work our batteries shown above.
The 675 hearing aid battery has a rating of 1.4 volts with dimensions of 11.6mm x 5.4mm. It has a 600mAh capacity and can last up to 250 hours of usage. This battery doesn’t harm the environment since it contains no mercury.