10440
An AAA-sized rechargeable lithium-ion cell at 3.6 V. The same fit as an AAA at more than double the voltage.
- Voltage
- 3.6 V
- Chemistry
- Li-ion
- Size
- 10 × 44 mm
- Capacity
- 300–350 mAh
Specifications
| Type | Cylindrical |
|---|---|
| Chemistry | Li-ion |
| Nominal voltage | 3.6 V |
| Diameter | 10 mm |
| Height | 44 mm |
| Typical capacity | 300–350 mAh |
| Rechargeable | Yes |
| Also sold as | ICR10440 |
Equivalent batteries
These codes describe the same physical cell as the 10440.
Can I replace 10440 with…
Cells that fit the same space but differ in chemistry or voltage.
Alkaline, 10.5 × 44.5 mm. Different footprint — check the compartment before buying.
Runs at 1.5 V against the 10440’s 3.6 V. That 2.1 V gap can damage a device built for the 10440.
The AAA is single-use and must never be recharged.
Li-ion, 14 × 50 mm. Different footprint — check the compartment before buying.
Check before you swap. Batteries with similar dimensions are not always interchangeable with the 10440. Always verify voltage, chemistry and the requirements printed in your device manual before fitting a replacement.
10440 questions
What batteries are equivalent to the 10440?
The 10440 is sold as ICR10440. All of these describe the same 10 × 44 mm li-ion cell at 3.6 V.
Can I use a AAA instead of a 10440?
In many low-drain devices, yes — the sizes match. Check the voltage and chemistry against your device's requirement first, because a small voltage difference can matter in calibrated equipment.
How long does a 10440 last?
A 10440 holds a typical 300–350 mAh. Real runtime depends entirely on how much current your device draws and whether it is used continuously.
Is the 10440 rechargeable?
Yes, the 10440 is a rechargeable cell and must be charged in a charger designed for its chemistry.
Related batteries
Other cylindricals in the index.