Fenix ARB-L18-4000U High-Capacity USB Rechargeable 18650 Battery - 4000mAh

The Fenix ARB-L18-4000U 18650 rechargeable battery offers unparalleled convenience and performance with its 4000mAh high-capacity and built-in USB-C charging port. Ideal for high-performance Fenix LED flashlights, this button-top battery provides easy charging with just a cable—no external charger needed. Its robust design includes multiple protective features, making it safe and reliable for demanding users.

Technical Specifications:

• Capacity: 4000mAh
• Design: Button-top
• Charging Port: Integrated USB-C
• Protection Systems:
  • Short-circuit protection
  • Overcharge and over-discharge protection
  • Overheat protection
• Cycle Life: Up to 500 charge cycles, retaining 75% of original capacity
• Included: 1 Qty

Built with steel shell riveting technology, the ARB-L18-4000U includes a pressure relief vent to expel gas generated by internal short circuits, preventing swelling or explosion risks. Designed for rugged use, this battery is impact-resistant and offers enhanced safety in challenging environments.