D Battery
Also known as: LR20
Largest common cylindrical battery. Highest capacity in standard battery sizes. IEC designation R20 for zinc-carbon, LR20 for alkaline. Used in high-power, high-drain applications.
Quick Specifications
Voltage
1.5V
Capacity
4000-8000 mAh
Size
⌀32.2-34.2 mm
Height
58-61.5 mm
Technical Drawing
Dimensions shown in mm. Drawing not to scale.
Chemistry & Performance
| Chemistry | Voltage | Capacity | End Voltage |
|---|---|---|---|
| Zinc Carbon | 1.5V | 4000-8000 mAh | 0.8V |
| Alkaline | 1.5V | 12000-20000 mAh | 0.8V |
| Nimh | 1.2V | 2000-10000 mAh | 1V |
Physical Specifications
- Diameter
- 32.2-34.2 mm
- Height
- 58-61.5 mm
- Weight (alkaline)
- 140-160 g
- Weight (nimh)
- 160-180 g
- Weight (zinc_carbon)
- 90-110 g
Standard Designations
IEC Code
R20
ANSI Code
13A
Common Uses
- Large flashlights
- Portable radios
- Boom boxes
- Emergency radios
- Large toys
- Portable speakers
- Megaphones
- Lanterns
- Power tools
- High-drain electronics
Temperature Range
Operating
-20°C to 55°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
- Wikipedia D Battery Technical Reference
Retrieved: 2025-01-09