21700 Fenix Battery (4000 mAh)
Brand: Fenix. This 21700 format ARB-L21-4000P lithium-ion battery has a capacity of 4000 mAh and is designed for power-intensive devices, including powerful flashlights, professional equipment, and other devices that require a stable high current.
Device Description
The modern design combines high capacity with the ability to deliver high current. The battery is designed for intensive use, ensuring reliable and stable operation thanks to multi-level protection and a high-quality metal casing with a rivet, which increases the mechanical resistance of the cell. Ventilation holes are provided for safe gas discharge in emergency situations.
Power and Current
- Nominal voltage: 3.6 V
- Maximum momentary current: 18 A
- Continuous current: 10 A
- Maximum charging current: 4 A
Durability and Cycles
- Tested for ≥500 charge/discharge cycles
- Retains ≥75% of initial capacity after 500 cycles
Protection and Safety
- Multi-level protection against overvoltage, short circuit, and other anomalies (thanks to built-in protective solutions)
- Ventilation holes for safe gas discharge
- Durable metal casing with a rivet for mechanical resistance
Technical Specifications
- Type: Lithium-ion
- Format: 21700
- Capacity: 4000 mAh
- Dimensions: 76 × 22 mm
- Weight: 70 g
Purpose: an ideal choice for use in high-power flashlights, professional lights, portable power sources, and other devices where capacity and high discharge capability are important.
Warranty: 12 months from the manufacturer.
The 21700 Fenix Battery (4000 mAh) is a reliable and high-performance power source with proven characteristics and increased durability, combining safety, casing strength, and efficient operation at high currents. The specified technical parameters and characteristics will help you correctly select this battery for your equipment and ensure long-term operation.
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