Fenix ​​USB Battery ARB-L18U (18650 4000mAh 3.6V)

The Fenix ​​ARB L18U 18650 4000 mAh 3.6V is a high-capacity lithium-ion battery with a built-in USB-C port for direct charging. Its advanced design with multiple protections delivers up to 500 charge cycles with approximately 75% remaining capacity. No memory effect, allowing for intermediate charging without loss of capacity or lifespan. The steel casing and pressure valves provide additional protection against short circuits and mechanical damage. The recommended charging current is 0.8 A, with a maximum of 4 A for optimal performance.