---
title: "6LR61 equivalent: 6LR61, 1604A, PP3"
description: "The 6LR61 is a 9 V alkaline cell, also sold as 6LR61, 1604A, PP3. Full equivalents, what does not substitute, and where it is used."
url: https://atoneplace.net/battery/9v/
site: "At One Place"
---

# 6LR61 battery

**What replaces a 6LR61: 6LR61, 1604A, PP3, MN1604, 522, 6AM6**

9 V alkaline, 48.5 × 26.5 × 17.5 mm

The 6LR61 is a single-use 9 V alkaline prismatic. The codes below are the same physical cell sold under different manufacturer names, and any of them will fit.

## Specification

- **IEC designation:** 6LR61
- **ANSI / NEDA:** 1604A
- **Nominal voltage:** 9 V
- **Chemistry:** Alkaline
- **Size:** 48.5 × 26.5 × 17.5 mm
- **Typical capacity:** 565 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? |
| --- | --- |
| 6LR61 | Yes — same cell |
| 1604A | Yes — same cell |
| PP3 | Yes — same cell |
| MN1604 | Yes — same cell |
| 522 | Yes — same cell |
| 6AM6 | Yes — same cell |
| 6LF22 | Yes — same cell |
| E-block | Yes — same cell |
| Krona | Yes — same cell |
| 6F22 (zinc-carbon size) | Yes — same cell |

## Codes that look close but are not

| Code | Why it is not a substitute |
| --- | --- |
| NiMH 9 V | Rechargeable versions of this shape are usually seven cells at 8.4 V or six at 7.2 V, not 9. Smoke alarms in particular are specified for a 9 V alkaline or lithium and can chirp low-battery from the day a NiMH is fitted. |
| 6F22 zinc-carbon | The same shape at the same voltage, but a fraction of the capacity — typically 400 mAh against 565 — and much worse under load. It is what is in the cheap multipack. |

> The 6LR61 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

- Smoke and carbon monoxide alarms
- Guitar effects pedals and active pickups
- Multimeters and clamp meters
- Wireless microphone transmitters

> Six 1.5 V cells in series inside a rectangular shell — in an alkaline 9 V they are six AAAA cells, which is why a dead one can be opened for stylus batteries.

## Common questions

### What is equivalent to a 6LR61?

6LR61, 1604A, PP3, MN1604, 522, 6AM6, 6LF22, E-block, Krona, 6F22 (zinc-carbon size) — all the same 9 V cell under different manufacturer codes.

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

Rechargeable versions of this shape are usually seven cells at 8.4 V or six at 7.2 V, not 9. Smoke alarms in particular are specified for a 9 V alkaline or lithium and can chirp low-battery from the day a NiMH is fitted.

### Is the 6LR61 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

- [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/)
- [CR-P2 battery](https://atoneplace.net/battery/crp2/)

## Sources

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