F Battery
Also known as: F
Largest common cylindrical primary battery. Rarely seen in consumer applications today but still used in specialized industrial and emergency equipment. Approximately twice the size of a D cell.
Quick Specifications
Voltage
1.5V
Capacity
26000mAh mAh
Size
⌀33 mm
Height
91 mm
Technical Drawing
Dimensions shown in mm. Drawing not to scale.
Chemistry & Performance
| Chemistry | Voltage | Capacity | End Voltage |
|---|---|---|---|
| Alkaline | 1.5V | 26000mAh mAh | 0.9V |
| Carbon Zinc | 1.5V | 8000mAh mAh | 0.8V |
Physical Specifications
- Diameter
- 33 mm
- Height
- 91 mm
- Weight (alkaline)
- 148 g
- Weight (carbon_zinc)
- 120 g
Standard Designations
IEC Code
LR20
ANSI Code
13F
Common Uses
- Large flashlights
- Emergency lighting
- Portable radios
- Lanterns
- Industrial equipment
- Emergency beacons
- Heavy-duty applications
Temperature Range
Operating
-18°C to 55°C
Storage
-30°C to 70°C
Data Sources
- IEC 60086-2 Standard
Retrieved: 2025-01-15
International standard for primary batteries