Hearing aid · 1.45 V
Size 312 hearing aidequivalents
The Size 312 hearing aid is also sold as PR41, Brown and A312. They are the same cell under different brand and standard names, so any of them fits.
Same battery, other names
- PR41
- Brown
- A312
Size and specs
- Voltage
- 1.45 V
- Size
- 7.9 × 3.6 mm
- Chemistry
- Zinc-air.
- Type
- Hearing aid
What uses a size 312 hearing aid
Typical devices and how long a fresh set usually lasts. Yours may differ.
| Device | Takes | Lasts |
|---|---|---|
| Hearing aid | 1 × 312 | about a week |
Size 312 vs LR41
Batteries people mix up with the Size 312 hearing aid. Close, but not the same.
| Battery | Size, voltage | Difference |
|---|---|---|
| Size 312 hearing aid | 7.9 × 3.6 mm1.45 V | This page. |
| LR41 | 7.9 × 3.6 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 312 always has a brown tab. PR41 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 312 typically lasts about 3 to 10 days.
Questions
What is the equivalent of a size 312 hearing aid battery?
The Size 312 hearing aid is also sold as PR41, Brown and A312. They are the same cell under different brand and standard names, so any of them fits.
What size is a size 312 hearing aid battery?
7.9 × 3.6 mm, 1.45 V. Zinc-air.
What uses a size 312 hearing aid battery?
Common devices include hearing aid.
Battery Inventory for iPhone and iPad
Never look up the Size 312 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.
