AAA Battery
Also known as: LR03
Second most common battery size. Smaller version of AA with proportionally reduced capacity. IEC designation R03 for zinc-carbon, LR03 for alkaline. LR03 provides 3-5 times the capacity of R03.
Quick Specifications
Voltage
1.5V
Capacity
540 mAh
Size
⌀10.5 mm
Height
44.5 mm
Technical Drawing
Dimensions shown in mm. Drawing not to scale.
Chemistry & Performance
| Chemistry | Voltage | Capacity | End Voltage |
|---|---|---|---|
| Zinc Carbon | 1.5V | 540 mAh | 0.8V |
| Alkaline | 1.5V | 850-1200 mAh | 0.8V |
| Lithium | 1.5V | 1200 mAh | 1V |
| Nimh | 1.2V | 800-1100 mAh | 1V |
Physical Specifications
- Diameter
- 10.5 mm
- Height
- 44.5 mm
- Weight (alkaline)
- 11.5 g
- Weight (lithium)
- 7.6 g
- Weight (nimh)
- 14-15 g
- Weight (zinc_carbon)
- 9.5 g
Standard Designations
IEC Code
R03
ANSI Code
24A
Common Uses
- Remote controls
- Small flashlights
- Computer mice
- Wireless headphones
- Digital thermometers
- Small toys
- LED candles
- Bluetooth earbuds
- Portable fans
- Small electronics
Temperature Range
Operating
0°C to 60°C
Storage
-30°C to 70°C
Data Sources
- Energizer Technical Data Library
Retrieved: 2025-01-09
- Duracell Technical Data Sheets
Retrieved: 2025-01-09
- Panasonic EVOLTA Battery Specifications
Retrieved: 2025-01-09
- Wikipedia AAA Battery Technical Reference
Retrieved: 2025-01-09