FENIX ARB-L14-2200U USB-C AA Li-ion Battery

The Fenix ARB-L14-2200U is a rechargeable AA-format battery with a Li-ion cell and integrated electronics that maintain a constant voltage of 1.5 V throughout the entire discharge cycle. It is designed for torches and devices that require stable voltage, including compatible Fenix products used in airsoft and outdoor activities.

The rated capacity is 2200 mAh (3.3 Wh), with a maximum discharge current of 1.6 A. Charging is handled directly via the USB-C connector built into the battery, with no external charger required: charge time from fully depleted is approximately 2.5 hours, at a charge current of 300 mA. An LED indicates status: red while charging, blue when fully charged. Dimensions are 14.5 mm in diameter and 50 mm in height, with a weight of 19 g. The battery is stated as compatible with Fenix torches including the HL23, HL50, E12, E20, LD12 and LD22, but not with the HM23, LD41 or LD42, which require discharge currents beyond what this cell can deliver.

Key points

• The constant 1.5 V output keeps torch brightness and behaviour consistent right until the charge runs out, without the gradual drop typical of NiMH cells.
• The built-in USB-C connector removes the dependency on a dedicated charger: the battery can be recharged from any available USB source.
• Over 300 charge cycles as rated: a relevant figure for those who use their torch frequently and want to spread the cost over time.
• Internal electronic protections against overcharge, deep discharge and short circuit reduce the risk of damaging the cell or the host device.
• Before purchasing, confirm that your torch model appears on the compatibility list: Fenix models requiring higher currents are not supported by this cell.