10440 Battery
AAA-sized lithium-ion. Much higher voltage than AAA alkaline - verify compatibility. Name comes from dimensions: 10mm diameter × 44mm height. Direct AAA size replacement but with 3.7V instead of 1.5V.
Quick Specifications
Voltage
3.7V
Capacity
300-400 mAh
Size
⌀10.5 mm
Height
44 mm
Technical Drawing
Dimensions shown in mm. Drawing not to scale.
Chemistry & Performance
| Chemistry | Voltage | Capacity | End Voltage |
|---|---|---|---|
| Lithium Ion | 3.7V | 300-400 mAh | V |
Physical Specifications
- Diameter
- 10.5 mm
- Height
- 44 mm
- Weight (typical)
- 12-15 g
Common Uses
- Small LED flashlights
- Laser pointers
- Some AAA-compatible devices
Temperature Range
Operating
-20°C to 60°C
Storage
-30°C to 70°C
Data Sources
- Wikipedia - 18650 Battery
Retrieved: 2025-09-01
- Battery University - Types of Battery Cells
Retrieved: 2025-09-01