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Hearing aid · 1.45 V

Size 675 hearing aidequivalents

The Size 675 hearing aid is also sold as PR44, Blue and A675. They are the same cell under different brand and standard names, so any of them fits.

Same battery, other names

  • PR44
  • Blue
  • A675

Size and specs

Voltage
1.45 V
Size
11.6 × 5.4 mm
Chemistry
Zinc-air.
Type
Hearing aid

Size 675 vs LR44

Batteries people mix up with the Size 675 hearing aid. Close, but not the same.

Battery Size, voltage Difference
Size 675 hearing aid 11.6 × 5.4 mm1.45 V This page.
LR44 11.6 × 5.4 mm1.5 V The same size, but an alkaline 1.5 V cell with no air holes. It won't power a hearing aid properly.

Good to know

  • Size 675 always has a blue tab. PR44 is the IEC name.
  • Zinc-air cells start working when you peel off the tab and let air in. Wait about a minute before closing the door.
  • A size 675 typically lasts about 9 to 20 days. It's also used in cochlear implant processors.

Questions

What is the equivalent of a size 675 hearing aid battery?

The Size 675 hearing aid is also sold as PR44, Blue and A675. They are the same cell under different brand and standard names, so any of them fits.

What size is a size 675 hearing aid battery?

11.6 × 5.4 mm, 1.45 V. Zinc-air.

Battery Inventory for iPhone and iPad

Never look up the Size 675 hearing aid again.

Battery Inventory remembers which battery every device in your home takes, reminds you when one is due, and counts the spares in your drawer, so you buy the right cell before the old one dies. The finder in the app knows every code on this page. Search any of them, or point the camera at a coin cell to read it.

  • Battery change reminders, free
  • Monthly smoke and CO alarm test reminders
  • A spares drawer and shopping list
  • Cordless tool packs and chargers too

No account needed. Smoke and CO alarm features are reminders only: the app can't see or test your alarms.

The Add Device grid in Battery Inventory, with a callout showing that a 357 cell is an LR44, also sold as AG13, SR44 and A76.