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.

We ship every business day with DHL. They pick up around 2:00 PM. Delivery in the Netherlands is usually the next day.

In the Netherlands, shipping is free for orders over 50 euros. In Belgium, shipping is free for orders over 100 euros.

We have a 365-day returns policy. Please use our returns form: https://trail.nl/retour

Fenix ​​Headlamps: Power and Reliability for Trail Runners

Fenix ​​is ​​a leading lighting brand, known for its robust and powerful headlamps perfect for trail runners. In your trail shop, you'll find a selection of Fenix ​​headlamps specifically designed to make every night run or early morning hike brighter and safer.

The Fenix ​​HL60R is one of our most popular models, with an impressive 950 lumens of light output and a range of up to 116 meters. This rechargeable headlamp is built for long-lasting performance in demanding conditions, whether you're running through dense forests or along mountain trails. Thanks to its durable aluminum housing and IPX-8 waterproof rating, the HL60R is a reliable companion, whatever the weather.

The Fenix ​​HM65R-T Offers a combination of power and lightweight design. With both spotlight and floodlight functions, this light is ideal for trail runners who need flexibility and optimal visibility on technical trails.

Fenix ​​emphasizes durability and efficiency, with headlamps that combine long battery life with powerful performance. Whether you're training for an ultramarathon or simply want to make your evening runs safer, Fenix ​​headlamps give you the light you need to go further.

Do you have questions about this product or are you unsure about several models? Feel free to contact us or visit our shop.

• The fastest way is the chat button at the bottom right.
• You can also email us at winkel@trail.nl.
• You can also call us at 020 308 6088.