The Fenix ARB-L18-3500U battery is a high capacity 18650 li-ion cell, specifically designed for high drain devices such as high intensity flashlights and headlamps. It has a built-in micro USB port for direct charging into the battery using a micro USB cable (not included). The charging indicator changes from red to blue once fully charged.

The high capacity (3500mAh) provides excellent reliability and optimum runtimes.

The battery features a built-in protection circuit for damage resistance, triple overheat protection and built-in overcharge and over discharge protection, for safety and reliability.

Please note all orders for individual batteries without a device are sent via Royal Mail 48 Tracked, and not Royal Mail 24 Tracked or Special Delivery. Due to shipping restrictions, we are unable to send power banks to the Outer Hebrides, Scottish Highlands and surrounding areas, Channel Islands and Northern Ireland. Please see our delivery page for further details.