---
title: "PR41 equivalent: ZA312, A312, AC312"
description: "The PR41 is a 1.4 V zinc-air cell, also sold as ZA312, A312, AC312. Full equivalents, what does not substitute, and where it is used."
url: https://atoneplace.net/battery/za312/
site: "At One Place"
---

# PR41 battery

**What replaces a PR41: ZA312, A312, AC312, DA312, P312, 312A**

1.4 V zinc-air, 7.9 × 3.6 mm (diameter × height)

The PR41 is a single-use 1.4 V zinc-air button cell. The codes below are the same physical cell sold under different manufacturer names, and any of them will fit.

## Specification

- **IEC designation:** PR41
- **ANSI / NEDA:** 7002ZD
- **Nominal voltage:** 1.4 V
- **Chemistry:** Zinc-air
- **Size:** 7.9 × 3.6 mm (diameter × height)
- **Typical capacity:** 181 mAh
- **Rechargeable:** No — never charge it

## Codes that mean the same battery

*Different manufacturers, one physical battery. Voltage, chemistry and dimensions all match.*

| Code | Fits? |
| --- | --- |
| ZA312 | Yes — same cell |
| A312 | Yes — same cell |
| AC312 | Yes — same cell |
| DA312 | Yes — same cell |
| P312 | Yes — same cell |
| 312A | Yes — same cell |
| S312 | Yes — same cell |
| V312 | Yes — same cell |
| 7002ZD | Yes — same cell |
| PR41 | Yes — same cell |

## Codes that look close but are not

| Code | Why it is not a substitute |
| --- | --- |
| Size 13 / PR48 | Same 7.9 mm diameter but 5.4 mm tall instead of 3.6. Orange tab, not brown. This is the pair people mix up, because only the height differs — a 13 will not fit a 312 door, and a 312 in a 13 compartment sits loose. |
| SR41 / LR41 | Also 7.9 × 3.6 mm, but 1.55 V silver oxide and 1.5 V alkaline respectively, sealed rather than air-breathing. Not hearing aid cells. |

> The PR41 is a primary cell and must never be put in a charger. Charging a sealed primary battery builds gas pressure inside a can with no vent designed for it, which is how they rupture or catch fire. Rechargeable look-alikes exist for several sizes and carry different codes — check the code, not the shape.

## Where it turns up

- Receiver-in-canal hearing aids
- Mini behind-the-ear instruments
- In-the-canal aids
- The most common hearing aid size sold

> Brown tab. Typically three to ten days per cell depending on how hard the aid is streaming Bluetooth audio.

## Common questions

### What is equivalent to a PR41?

ZA312, A312, AC312, DA312, P312, 312A, S312, V312, 7002ZD, PR41 — all the same 1.4 V cell under different manufacturer codes.

### Can I use a Size 13 / PR48 instead of a PR41?

Same 7.9 mm diameter but 5.4 mm tall instead of 3.6. Orange tab, not brown. This is the pair people mix up, because only the height differs — a 13 will not fit a 312 door, and a 312 in a 13 compartment sits loose.

### Is the PR41 rechargeable?

No. It is a primary cell — charging one risks rupture or fire. Rechargeable look-alikes exist in the same size under different codes.

## Related pages

- [LR44 battery](https://atoneplace.net/battery/lr44/)
- [SR626SW battery](https://atoneplace.net/battery/sr626sw/)
- [SR44 battery](https://atoneplace.net/battery/sr44/)
- [PR48 battery](https://atoneplace.net/battery/za13/)
- [SR621SW battery](https://atoneplace.net/battery/sr621sw/)
- [PR44 battery](https://atoneplace.net/battery/za675/)
- [SR920SW battery](https://atoneplace.net/battery/sr920sw/)
- [LR41 battery](https://atoneplace.net/battery/lr41/)
- [PR70 battery](https://atoneplace.net/battery/za10/)
- [SR927SW battery](https://atoneplace.net/battery/sr927sw/)
- [LR1130 battery](https://atoneplace.net/battery/lr1130/)
- [SR1130 battery](https://atoneplace.net/battery/sr1130/)

## Sources

- Official vendor product documentation — At One Place (/about/)