312 Battery
Also known as: A312
Mid-size hearing aid battery. Zinc-air chemistry provides stable voltage and high energy density. Air-activated system requires removal of sealing tab. Color-coded brown for easy identification. Good balance of size and capacity.
Quick Specifications
Voltage
1.45V
Capacity
175-190 mAh
Size
⌀7.9 mm
Height
3.6 mm
Technical Drawing
Dimensions shown in mm. Drawing not to scale.
Chemistry & Performance
| Chemistry | Voltage | Capacity | End Voltage |
|---|---|---|---|
| Zinc Air | 1.45V | 175-190 mAh | 1.1V |
Physical Specifications
- Diameter
- 7.9 mm
- Height
- 3.6 mm
- Weight (typical)
- 0.58 g
Standard Designations
IEC Code
PR41
Common Uses
- Behind-the-ear (BTE) hearing aids
- Receiver-in-canal (RIC) hearing aids
- In-the-ear (ITE) hearing aids
- Hearing aid accessories
Temperature Range
Operating
0°C to 40°C
Storage
10°C to 25°C
Data Sources
- Battery Equivalents - Hearing Aid Batteries Guide
Retrieved: 2025-09-01
- Wikipedia - Zinc-Air Battery
Retrieved: 2025-09-01