Phoenix | ARB-L21-5000 | Battery 21700 | 5000mAh
Phoenix | ARB-L21-5000 | Battery 21700 | 5000mAh
🔋 Powerful 21700 Li-ion battery for long-lasting performance
The Fenix ARB-L21-5000 is a 21700 Li-ion battery with a capacity of 5000 mAhThis battery delivers stable performance and has significantly more power than a standard 18650 battery (2300 mAh). Note: this battery is not compatible with 18650 models and will only work in flashlights specifically designed for 21700 batteries.
Thanks to the protection against overcharging and overheating Is this battery safe to use and suitable for demanding applications?
💡 Tip: Charge Li-ion batteries regularly and use them often to extend their lifespan.
✅ Key Benefits
- ⚡ 5000 mAh capacity – extra long life for 21700 compatible flashlights
- 🛡 Secured – against overcharging and overheating
- 🔄 Up to 500 charge cycles – durable performance with regular use
- 🔋 2x more powerful than a standard 18650 battery
- 🔌 Rechargeable – for repeated use and lower long-term costs
📋 Specifications
- Type: Li-ion 21700
- Capacity: 5000 mAh
- Nominal voltage: 3.6 V
- Number of charge cycles: ± 500
- Security: Yes (overloaded & overheating)
- Dimensions: n.b.
- Weight: 72 g
- Colour: Orange/Black
- Warranty: 2 years
- Country of origin: China
🎯 Perfect for
Users of 21700-compatible Fenix flashlights who want maximum capacity and long service life.
