On/off
Press and hold the side switch for 0.5 seconds to turn on/off the light.
Output Selection
With the light switched on, single click the switch to cycle through Low→Med→High→Turbo.
Flash Mode
With the light switched on, double click the switch to enter Flash mode, single click again to exit
flash mode and return to the previously used mode.
Intelligent Memory Circuit
The bicycle light memorizes the last selected output excluding Flash mode. When turned on again
the previously used mode will be recalled.
Battery Specifications
Type
Dimensions
Nominal
Voltage
Usability
Fenix ARB-L18 Series
18650
3.6V
Recommended
√√
Non-rechargeable Battery
(Lithium)
CR123A
3V
Usable (no charging)
√
Rechargeable Battery
(Li-ion)
18650
3.6V
Banned
×
Rechargeable Battery
(LiFePO4)
16340
3.2V
Banned
×
Rechargeable Battery
(LiFePO4)
18650
3.2V
Banned
×
Warning: *18650 Li-ion batteries are powerful cells designed for commercial applications and must be treated
with caution and handled with care. Only use quality batteries with circuit protection will reduce the potential for
combustion or explosion; but cell damage or short circuiting are potential risks the user assumes.
