21700 Fenix ARB-L21-5000 V2.0 Battery
The Fenix ARB-L21-5000 V2.0 battery is an improved version of the ARB-L21-5000, designed for maximum runtime of Fenix series flashlights that support the 21700 format. This battery has a nominal voltage of 3.6 V and a record capacity of 5000 mAh, ensuring long-lasting operation under high loads and significantly extending the runtime of handheld flashlights at maximum settings.
Key Information
Manufacturer: Fenix
Product code: 28071
Category: Power Independence > Rechargeable Batteries
Durability and Cycles
- Minimum 800 charge-discharge cycles.
- If the battery is not used for more than 3 months, simply charge it to restore its original capacity.
- Recommended charging current: 1–4 A; optimal charging current: 1 A.
Safety and Protection
- Multi-level protection against overload, short circuit, and overheating thanks to the protective circuit board (PCB) in the anode.
- Durable metal (steel) casing that prevents damage from drops and mechanical impacts.
- Two ventilation holes for safe release of excess gas, protected by a film against moisture and dust.
Technical Specifications
- Form factor: 21700
- Capacity: 5000 mAh
- Nominal voltage: 3.6 V
- Optimal charging current: 1 A (recommended)
- Recommended charging current range: 1–4 A
- Dimensions: 21.5 × 75.8 ±0.2 mm
- Weight: 75 g
- Minimum 800 charge-discharge cycles
Features
- Protection against overheating, short circuit, and explosion.
- Metal casing for reliable mechanical protection.
- Ventilation holes for safe gas release during extreme conditions.
The Fenix ARB-L21-5000 V2.0 battery is suitable for users who require maximum autonomy and reliability from 21700 format flashlights. Thanks to its large 5000 mAh capacity and well-designed safety mechanisms, this power cell is ideal for professional use, tourism, rescue operations, and daily use in urban environments. Manufacturer's warranty: 12 months.
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