---
title: "6HR61 equivalent: 6HR61, 7HR61, NH22"
description: "The 6HR61 is a 8.4 V nickel-metal hydride cell, also sold as 6HR61, 7HR61, NH22. Full equivalents, what does not substitute, and where it is used."
url: https://atoneplace.net/battery/nimh-9v/
site: "At One Place"
---

# 6HR61 battery

**What replaces a 6HR61: 6HR61, 7HR61, NH22, 8.4V PP3 rechargeable, Ni-MH 9V**

8.4 V nickel-metal hydride, 48.5 × 26.5 × 17.5 mm

The 6HR61 is a rechargeable 8.4 V nickel-metal hydride prismatic. The codes below are the same physical cell sold under different manufacturer names, and any of them will fit.

## Specification

- **IEC designation:** 6HR61
- **ANSI / NEDA:** 7.2H5
- **Nominal voltage:** 8.4 V
- **Chemistry:** Nickel-metal hydride
- **Size:** 48.5 × 26.5 × 17.5 mm
- **Typical capacity:** 200 mAh
- **Rechargeable:** Yes

## Codes that mean the same battery

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

| Code | Fits? |
| --- | --- |
| 6HR61 | Yes — same cell |
| 7HR61 | Yes — same cell |
| NH22 | Yes — same cell |
| 8.4V PP3 rechargeable | Yes — same cell |
| Ni-MH 9V | Yes — same cell |

## Codes that look close but are not

| Code | Why it is not a substitute |
| --- | --- |
| 6LR61 alkaline 9 V | The rechargeable is seven cells at 8.4 V or six at 7.2 V, and around 200 mAh against 565. Smoke alarms are certified for the alkaline or lithium 9 V and can chirp low-battery from day one on a NiMH. Fire regulations in several jurisdictions require the specified cell. |

## Where it turns up

- Guitar effects pedals used regularly
- Wireless microphone transmitters
- Test equipment on the bench
- Anything on a charger between sessions

> Nominal voltage is 7.2 V (six cells) or 8.4 V (seven); 8.4 V is the more common modern build. Capacity 150–300 mAh depending on cell count and construction.

## Common questions

### What is equivalent to a 6HR61?

6HR61, 7HR61, NH22, 8.4V PP3 rechargeable, Ni-MH 9V — all the same 8.4 V cell under different manufacturer codes.

### Can I use a 6LR61 alkaline 9 V instead of a 6HR61?

The rechargeable is seven cells at 8.4 V or six at 7.2 V, and around 200 mAh against 565. Smoke alarms are certified for the alkaline or lithium 9 V and can chirp low-battery from day one on a NiMH. Fire regulations in several jurisdictions require the specified cell.

### Is the 6HR61 rechargeable?

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

## Related pages

- [6LR61 battery](https://atoneplace.net/battery/9v/)
- [BCI Group 48 battery](https://atoneplace.net/battery/bci-48/)
- [BCI Group 35 battery](https://atoneplace.net/battery/bci-35/)
- [BCI Group 51R battery](https://atoneplace.net/battery/bci-51r/)
- [BCI Group 65 battery](https://atoneplace.net/battery/bci-65/)
- [BCI Group 24F battery](https://atoneplace.net/battery/bci-24f/)
- [BCI Group 47 battery](https://atoneplace.net/battery/bci-47/)
- [BCI Group 27 battery](https://atoneplace.net/battery/bci-27/)
- [BCI Group 49 battery](https://atoneplace.net/battery/bci-49/)
- [BCI Group 24 battery](https://atoneplace.net/battery/bci-24/)
- [BCI Group 34 battery](https://atoneplace.net/battery/bci-34/)
- [BCI Group 78 battery](https://atoneplace.net/battery/bci-78/)

## Sources

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