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The top-notch Fenix 18650 4000 mAh battery with USB-C connector (ARB-L18-4000U) offers maximum capacity and convenient charging directly through the integrated USB-C port. This Li-ion battery features a high capacity of 4000 mAh, ensuring long-lasting endurance and reliable performance. Additionally, it avoids issues with memory effect and self-discharge. With added electronic protection, you can rely on safe charging and use without the risk of overcharging, depletion, or short circuits.

The battery is compatible with selected Fenix flashlights and headlamps that support USB-C charging. Thanks to modern protective mechanisms such as overheating, overload, and explosion protection, the Fenix 18650 is one of the safest and most reliable batteries on the market.

1. USB-C Charging
   Fast and convenient charging directly using a USB-C cable.
2. High Safety
   Advanced protective mechanisms for safe use.

• USB-C charging for easy operation
• Capacity: 4000 mAh
• Nominal voltage: 3.6 V
• Maximum current: 7 A
• Maximum charging current: 4 A
• Protection against overload, overheating, and short circuits
• Length: 72 mm
• Diameter: 18.75 mm
• Weight: 50 g
• More than 500 charging cycles

Specifications:

Nominal voltage: 3.6 V
Capacity: 4000 mAh
Maximum current draw: 7 A
Maximum charging current: 4 A
Dimensions: 18.75 mm (diameter) x 72 mm (length) (+/- 0.5 mm)
Weight: 50 g
Protection circuit: Yes (on the positive terminal)
Lifetime: More than 500 charging cycles
Recommended operating temperatures: 0-45°C (charging), -20 to +60°C (discharging)
Warranty: 2 years