A312 Hearing Aid Battery — Zinc-Air 1.4V, PR41 Equivalent
Zinc-air 1.4V hearing aid cell — PR41 / size 312 equivalent for canal instruments.
Specifications
- Voltage
- 1.4V
- Diameter
- 7.9 mm
- Thickness
- 3.6 mm
- Capacity
- 180 mAh
- Weight
- 0.8 g
Typical capacity — reference value.
- UL
- UN38.3
- CE
- RoHS
- ISO9001
A312 is the canal-instrument workhorse - 7.9 × 3.6 mm, about 180 mAh. Crossover names: PR41 and 312A.
Size chart note: 312 and 13 share the diameter; thickness is the difference. The table on this page is the full chart.
Where it is used
- Hearing aids
- Medical devices
Equivalent & Cross-Reference
- PR41
- 312A
Packing quantities are standard; other formats on request.
Hearing Aid Battery Size Chart
A312 shares the 7.9 mm diameter with A13 at half the thickness - the most common modern canal size.
Wholesale & Custom Supply
Factory-direct: 6 pcs per pack, 100 pcs per box.
FAQ
What is an A312 battery?
A 1.4V zinc-air hearing aid cell, 7.9 × 3.6 mm, about 180 mAh typical capacity.
What is an A312 compatible with?
PR41 and 312A - same size and voltage, interchangeable.
How long does an A312 hearing aid battery last?
Usually one to two weeks of listening time per cell.
