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Views: 0 Author: Site Editor Publish Time: 2025-03-11 Origin: Site
The R20 battery is a D-size cylindrical battery commonly used in high-drain devices. Below is a detailed breakdown of its meaning, specifications, and uses:
The R20 battery is a zinc-carbon dry cell with a nominal voltage of 1.5V. It follows the IEC naming system, where: "R" stands for round cell (cylindrical shape) "20" refers to its size (D-type battery) If the battery is alkaline, it is labeled as LR20 instead of R20. The R20 (D) battery is widely used in devices that require high energy over a long time, including: Flashlights Radios Toys Emergency Lanterns Clocks Portable Fans Battery-operated Tools Alkaline (LR20) batteries are preferred for devices that need longer-lasting power, while zinc-carbon (R20) batteries are cheaper and used in low-drain applications. The R20 battery is known by different names in various standards and brands: R20 = Zinc-carbon, cheap, short lifespan LR20 = Alkaline, longer lifespan, higher capacity Rechargeable D = Environmentally friendly, reusable Would you like more details on a specific aspect? 1. Definition of R20 Battery
2. Technical Specifications
Attribute Details Full Name R20 Battery (Zinc-carbon) or LR20 Battery (Alkaline) Size D (Large cylindrical battery) Nominal Voltage 1.5V Diameter 34.2 mm (±0.2 mm) Height 61.5 mm (±0.2 mm) Weight 85g–140g (varies by chemistry) Chemistry Types - Zinc-Carbon (R20) (Leclanché cell)
- Alkaline (LR20)Capacity - Zinc-Carbon: ~3,000–8,000 mAh
- Alkaline: ~12,000–18,000 mAhRechargeable? No (Standard types)
Yes (NiMH/NiCd versions available)Shelf Life - Zinc-Carbon: ~2–3 years
- Alkaline: ~5–10 yearsTemperature Range -20°C to 54°C Discharge Rate Medium to high 3. Common Uses
4. Alternative Names
Standard Equivalent Name IEC (International) R20 (Zinc-carbon) / LR20 (Alkaline) ANSI (USA) 13D (Zinc-carbon) / 13A (Alkaline) JIS (Japan) UM-1 (Zinc-carbon) / AM-1 (Alkaline) Common Market Name D battery Duracell Model MN1300 Energizer Model E95 5. Key Differences: R20 vs. LR20 vs. Rechargeable D
Type Voltage Capacity Rechargeable? Best For R20 (Zinc-Carbon) 1.5V 3,000–8,000 mAh No Low-power devices (clocks, simple toys) LR20 (Alkaline) 1.5V 12,000–18,000 mAh No Flashlights, radios, high-power devices D Rechargeable (NiMH/NiCd) 1.2V 2,000–10,000 mAh Yes Devices with frequent battery changes 6. Summary
