FENIX ARB-L14-1600U AA Li-ion USB Rechargeable Battery

The FENIX ARB-L14-1600U is a lithium-ion rechargeable battery in AA format with built-in micro-USB charging, designed for tactical torches and field devices that require stable voltage. It is compatible with the FENIX HL23, HL50, E12, E20, LD12 and LD22 models; it is not compatible with HM23, LD41 or LD42.

The main advantage over common NiMH rechargeables is a constant voltage of 1.5 V throughout the entire discharge cycle: voltage-sensitive devices — torches with electronic regulation, GPS units, cameras — maintain full output right until depletion, without the gradual voltage drop typical of NiMH cells. Capacity is 1600 mAh with a maximum discharge current of 1.6 A, beyond which the built-in protection trips automatically. Charging is via micro-USB at 300 mA, with a full charge time of approximately 2.5 hours from fully discharged; an LED indicates status — red while charging, blue when complete. Rated service life is over 500 cycles. The cell measures 14.5 mm in diameter and 50 mm in height, weighing 19 g.

Key points

• Constant 1.5 V throughout discharge: consistent performance in voltage-sensitive electronics, without the voltage drop of NiMH
• Direct micro-USB charging: no external charger needed, connects anywhere a USB port is available
• Built-in protection against overcharge, deep discharge and short circuit
• Over 500 rated charge cycles, with a two-colour LED charge indicator
• Standard AA format: fits any battery compartment that accepts AA cells, in compatible models