Energizer ac675 da675h l675a size 675 hearing aid 4pk batteries (blue)

Type: Zinc Air
Voltage: 1.4 V
Color Coded: Blue
Diameter: 11.6 mm
Height: 5.4 mm

Also known as: VT675, XL675, AP675, 675HPX, 675A, R675ZA, 675AE, L675ZA, AC675E, ME9Z, A675, DA675X, ZA675, V675AT, DA675H, AC675, 7003ZD, PR44, AC675E, V675A, B900PA, DA675, 675HPX, PR-675PA, PZA675

The ZA675 is a popular battery for behind-the-ear hearing aids. All manufacturers colour code this battery blue for easy identification. However this should not be confused with the high power ZA675P cochlear implant batteries that are also colour coded blue.

What makes the Zinc Air battery unique is that it uses oxygen from the atmosphere. It has a small hole in the case that allows air into the battery, which is used as part of the chemical reaction. The battery is not activated until the plastic seal is removed. Typical applications are hearing aids, pagers and personal medical instruments.