---
title: "HR6 equivalent: HR6, HR15/51, 1.2H2"
description: "The HR6 is a 1.2 V nickel-metal hydride cell, also sold as HR6, HR15/51, 1.2H2. Full equivalents, what does not substitute, and where it is used."
url: https://atoneplace.net/battery/nimh-aa/
site: "At One Place"
---

# HR6 battery

**What replaces a HR6: HR6, HR15/51, 1.2H2, NH15, Eneloop AA, Ni-MH AA**

1.2 V nickel-metal hydride, 14.5 × 50.5 mm (diameter × height)

The HR6 is a rechargeable 1.2 V nickel-metal hydride cylindrical. The codes below are the same physical cell sold under different manufacturer names, and any of them will fit.

## Specification

- **IEC designation:** HR6
- **ANSI / NEDA:** 1.2H2
- **Nominal voltage:** 1.2 V
- **Chemistry:** Nickel-metal hydride
- **Size:** 14.5 × 50.5 mm (diameter × height)
- **Typical capacity:** 2000 mAh
- **Rechargeable:** Yes

## Codes that mean the same battery

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

| Code | Fits? |
| --- | --- |
| HR6 | Yes — same cell |
| HR15/51 | Yes — same cell |
| 1.2H2 | Yes — same cell |
| NH15 | Yes — same cell |
| Eneloop AA | Yes — same cell |
| Ni-MH AA | Yes — same cell |

## Codes that look close but are not

| Code | Why it is not a substitute |
| --- | --- |
| 14500 | The same size in lithium-ion at 3.7 V. Chargers are not interchangeable and neither are the cells; a NiMH charger applied to a lithium-ion cell is a fire risk and the reverse can overcharge the NiMH. |
| Alkaline AA | A NiMH runs at 1.2 V rather than 1.5 and holds it flat until it stops. Most devices do not care. Devices that infer charge from voltage — some smoke alarms, glucose meters and older cameras — will report low battery immediately or refuse to run. |

## Where it turns up

- Camera flashes and speedlights
- Game controllers and wireless mice
- Cordless phone handsets
- Anything replaced often enough to justify a charger

> Standard cells are 1900–2100 mAh, high-capacity ones up to 2500. Low-self-discharge types (Eneloop and equivalents) keep most of their charge for a year in the drawer, which ordinary NiMH does not.

## Common questions

### What is equivalent to a HR6?

HR6, HR15/51, 1.2H2, NH15, Eneloop AA, Ni-MH AA — all the same 1.2 V cell under different manufacturer codes.

### Can I use a 14500 instead of a HR6?

The same size in lithium-ion at 3.7 V. Chargers are not interchangeable and neither are the cells; a NiMH charger applied to a lithium-ion cell is a fire risk and the reverse can overcharge the NiMH.

### Is the HR6 rechargeable?

Yes. Use a charger made for its chemistry and never substitute a primary cell of the same size.

## Related pages

- [LR6 battery](https://atoneplace.net/battery/aa/)
- [LR03 battery](https://atoneplace.net/battery/aaa/)
- [ICR18650 battery](https://atoneplace.net/battery/18650/)
- [LR20 battery](https://atoneplace.net/battery/d/)
- [LR14 battery](https://atoneplace.net/battery/c/)
- [CR17345 battery](https://atoneplace.net/battery/cr123a/)
- [HR03 battery](https://atoneplace.net/battery/nimh-aaa/)
- [8LR932 battery](https://atoneplace.net/battery/a23/)
- [FR6 battery](https://atoneplace.net/battery/fr6/)
- [INR21700 battery](https://atoneplace.net/battery/21700/)
- [4LR44 battery](https://atoneplace.net/battery/4lr44/)
- [CR15H270 battery](https://atoneplace.net/battery/cr2/)

## Sources

- Typical range compiled from manufacturer specifications — At One Place (/about/)