---
title: "LR43 equivalent: 186, AG12, LR1142"
description: "The LR43 is a 1.5 V alkaline cell, also sold as 186, AG12, LR1142. Full equivalents, what does not substitute, and where it is used."
url: https://atoneplace.net/battery/lr43/
site: "At One Place"
---

# LR43 battery

**What replaces a LR43: 186, AG12, LR1142, L1142, V12GA, GP186**

1.5 V alkaline, 11.6 × 4.2 mm (diameter × height)

The LR43 is a single-use 1.5 V alkaline button cell. The codes below are the same physical cell sold under different manufacturer names, and any of them will fit.

## Specification

- **IEC designation:** LR43
- **Nominal voltage:** 1.5 V
- **Chemistry:** Alkaline
- **Size:** 11.6 × 4.2 mm (diameter × height)
- **Typical capacity:** 123 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? |
| --- | --- |
| 186 | Yes — same cell |
| AG12 | Yes — same cell |
| LR1142 | Yes — same cell |
| L1142 | Yes — same cell |
| V12GA | Yes — same cell |
| GP186 | Yes — same cell |
| G12A | Yes — same cell |
| 301A | Yes — same cell |
| 386A | Yes — same cell |

## Codes that look close but are not

| Code | Why it is not a substitute |
| --- | --- |
| SR43 / 386 | Silver oxide in the same can, 1.55 V flat. |
| LR44 | Same diameter, 1.2 mm taller. Easy to buy by mistake and it will not close the compartment. |

> The LR43 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

- Medical and dental instruments
- Older calculators
- Small toys
- Electronic test gear

## Common questions

### What is equivalent to a LR43?

186, AG12, LR1142, L1142, V12GA, GP186, G12A, 301A, 386A — all the same 1.5 V cell under different manufacturer codes.

### Can I use a SR43 / 386 instead of a LR43?

Silver oxide in the same can, 1.55 V flat.

### Is the LR43 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/)
- [PR41 battery](https://atoneplace.net/battery/za312/)
- [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/)

## Sources

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