FREE Shipping on Orders over $50 / $6.95 Flat Rate Ground

Fenix ARB-L18-3500U Li-ion 18650 Battery with USB Port


In Stock

SKU: FX-ARBL183500U Categories: , , ,

The high-capacity Fenix ARB-L18-3500U Li-ion 18650 battery features multiple charging methods.  This battery can be charged on-the-go with its built-in USB port without an external charger needed.  Using a common Micro-USB cord (sold separately), it can be directly plugged-in into a USB power source.  LED light indicators on top of battery will inform you when it is charged.  The ARB-L18-3500U can also be charged in an external charger and inside a internally-rechargeable flashlight making this battery very versatile to have on hand.  The high-capacity 3500 mAh provides longer run times between charges versus 18650 battery with lower mAh ratings.


  • Fenix ARB-L18-3500U Rechargeable Button-Top 18650 Battery with integrated direct-connect Micro-USB Port
  • Lithium-ion button-top - 3.7V; 3500 mAh
  • Max Charging current: 2.0A (charger), 1.0A (USB)
  • Equipped with multi-color LED - RED - charging; BLUE = charging completed
  • Protection circuit built in the anode with a steel hat by riveting process. Steel shell eliminates the risk of short-circuit caused by collision and impact.
  • Pressure Relief Vent: Expels waste gas generated by internal short circuit.
  • 3 Sets of Over-Heat Protection:  Over-charge protection, Over-discharge protection, Short-circuit protection, and overheating protection
  • 500 Charge Cycles: Properly maintained, this battery is designed to retain up to 75% of its original capacity at 500 full charge and discharge cycles.
  • Weight: 1.76 oz. (50 g)
  • Micro-USB cable sold separately
  • Note:  You may also charge the 3500U in an external charger if your desire


There are no reviews yet.

Be the first to review “Fenix ARB-L18-3500U Li-ion 18650 Battery with USB Port”