Standard sizes · 1.5 V
AAAAequivalents
The AAAA is also sold as LR61 and MN2500. They are the same cell under different brand and standard names, so any of them fits.
Same battery, other names
- LR61
- MN2500
Size and specs
- Voltage
- 1.5 V
- Size
- 8.3 × 42.5 mm
- Chemistry
- Alkaline (LR61).
- Capacity
- about 500 to 600 mAh
- Type
- Standard sizes
AAAA vs AAA
Batteries people mix up with the AAAA. Close, but not the same.
| Battery | Size, voltage | Difference |
|---|---|---|
| AAAA | 8.3 × 42.5 mm1.5 V | This page. |
| AAA | 10.5 × 44.5 mm1.5 V | Wider (10.5 mm). It won't fit an AAAA slot. |
Good to know
- LR61 is the IEC name and MN2500 is Duracell's.
- You'll find AAAA cells in styluses, laser pointers, pen lights and some glucose meters.
Questions
What is the equivalent of an AAAA battery?
The AAAA is also sold as LR61 and MN2500. They are the same cell under different brand and standard names, so any of them fits.
What size is an AAAA battery?
8.3 × 42.5 mm, 1.5 V. Alkaline (LR61).
Battery Inventory for iPhone and iPad
Never look up the AAAA again.
Battery Inventory remembers which battery every device in your home takes, reminds you when one is due, and counts the spares in your drawer, so you buy the right cell before the old one dies. The finder in the app knows every code on this page. Search any of them, or point the camera at a coin cell to read it.
- Battery change reminders, free
- Monthly smoke and CO alarm test reminders
- A spares drawer and shopping list
- Cordless tool packs and chargers too
No account needed. Smoke and CO alarm features are reminders only: the app can't see or test your alarms.
