The Fenix ARB-L18-4000U battery is a high quality, li-ion, 18650 with a high capacity of 4000mAh. The battery has a built-in USB-C port which removes the requirement for a separate external charger, although it can be charged inside a compatible charger or compatible rechargeable torch. 

Due to the extended length, the battery is compatible with later Fenix 18650 powered torches, such as: TK11 TAC, TK11R, TK26R, HM61R V2.0, HM62-T, HM75R, CL30R, E28R V2.0, LD30R, PD32R, HM65R Shadow Master and HM65R-T V2.0. Please ensure your battery tube depth is at least 72.5 mm for compatibility.

To recharge simply plug a USB-C cable (not included) into the battery. The indicator will change from red to blue when fully charged, which takes approximately 3.5 hours.

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.