LR03 battery
What replaces a LR03
LR03, 24A, MN2400, E92, AM4, Micro
1.5 V alkaline, 10.5 × 44.5 mm (diameter × height)
The LR03 is a single-use 1.5 V alkaline cylindrical. The codes below are the same physical cell sold under different manufacturer names, and any of them will fit.
Specification
- IEC designation
- LR03
- ANSI / NEDA
- 24A
- Nominal voltage
- 1.5 V
- Chemistry
- Alkaline
- Size
- 10.5 × 44.5 mm (diameter × height)
- Typical capacity
- 1150 mAh
- Rechargeable
- No — never charge it
Codes that mean the same battery
| Code | Fits? |
|---|---|
| LR03 | Yes — same cell |
| 24A | Yes — same cell |
| MN2400 | Yes — same cell |
| E92 | Yes — same cell |
| AM4 | Yes — same cell |
| Micro | Yes — same cell |
| UM-4 | Yes — same cell |
| Type 24 | Yes — same cell |
| R03 (zinc-carbon size) | Yes — same cell |
Codes that look close but are not
| Code | Why it is not a substitute |
|---|---|
| 10440 | A lithium-ion cell in the AAA shape at 3.7 V. More than twice the voltage; it will destroy the device. |
| NiMH AAA / HR03 | Rechargeable at 1.2 V, around 800–1000 mAh. Fine in most things, early "low battery" warnings in some. |
The LR03 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
- Remote controls and small torches
- Wireless mice and computer peripherals
- Digital thermometers and blood pressure monitors
- Electric toothbrush timers and small toys
Typically 1000–1200 mAh at a low drain and well under that in anything demanding, on the same measurement caveat as AA.
Common questions
- What is equivalent to a LR03?
- LR03, 24A, MN2400, E92, AM4, Micro, UM-4, Type 24, R03 (zinc-carbon size) — all the same 1.5 V cell under different manufacturer codes.
- Can I use a 10440 instead of a LR03?
- A lithium-ion cell in the AAA shape at 3.7 V. More than twice the voltage; it will destroy the device.
- Is the LR03 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
- LR6 battery 1.5 V alkaline
- ICR18650 battery 3.6 V lithium-ion (rechargeable)
- LR20 battery 1.5 V alkaline
- HR6 battery 1.2 V nickel-metal hydride
- LR14 battery 1.5 V alkaline
- CR17345 battery 3 V lithium (primary)
- HR03 battery 1.2 V nickel-metal hydride
- 8LR932 battery 12 V alkaline
- FR6 battery 1.5 V lithium (primary)
- INR21700 battery 3.6 V lithium-ion (rechargeable)
- 4LR44 battery 6 V alkaline
- CR15H270 battery 3 V lithium (primary)
Sources
- Typical range compiled from manufacturer specifications — At One Place