The Fenix ARB-L18-4000 battery is a high capacity 18650, Li-ion cell, specifically designed for high drain devices such as high intensity flashlights and headlamps. The high capacity (4000mAh) provides excellent reliability in a compact design and ensures 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.

May not fit older Fenix torches - please measure your battery tube length and diameter before purchasing.

Due to shipping restrictions we are unable to send orders containing only batteries without a device to Northern Ireland and the Channel Islands. Orders that include a device such as a torch and/or charger are unaffected.