Length: 6.0″ (152.2mm)
Body: 2.0″ (50.5mm)
Head: 2.4″ (61mm)
Weight: 15.2 oz. (431g) excluding batteries
Batteries: Four 18650 rechargeable Li-ion batteries (not included) NOTE: The light will not work with flat-top 18650s nor any of the micro-USB batteries like the Fenix 2600U/3500U. We recommend any of the other ARB-L18 series from Fenix.
Included: Lanyard, holster, spare O-ring
Warranty: Limited Lifetime Guarantee from Fenix Lighting USA
The parameters (lab-tested by using 4 Fenix ARB-L18-3500 3.6V/3500mAh rechargeable Li-ion batteries) may vary between flashlights, batteries and environments.
With the light off, press and hold the L switch for 0.5 seconds to turn on the Low output.
With the light off, press and hold the H switch for 0.5 seconds to turn on the High output.
With the light on, press and hold any switch for 0.5 seconds to turn off the light.
Note: If the battery level gets too low, the light can only be lit on the output level that the battery level can activate.
With the light on, single click the L switch for brightness decrease, and single click the H switch for brightness increase.
In any state, press and hold the L switch for 1.2 seconds to enter SOS; press and hold the H switch for 1.2 seconds to enter strobe; click one of the switch once again to turn back to general brightness level.
Spot- and Floodlight Adjustment
Rotate the focusing ring to regulate between spotlight and floodlight. Counterclockwise to gradual spotlight, clockwise to gradual floodlight. (The factory default is floodlight, and it will be a little tight for first focusing ring rotating)
Lock: with the light unlocked, simultaneously press and hold the two switches for over 2 seconds.Light will blink twice on Low and then switch off toindicate locked status.
Unlock: with the light locked, simultaneously press and hold the two switches for over 2 seconds.The light will be unlocked and activated on last used brightness.
With the light locked, press any switch will activate 2 blinksand then switch off to indicate locked status.
Intelligent Overheat Protection
The light will accumulate a lot of heat when used on Turbo output level for extended periods. When high temperature(≥ 65℃ )is detected or after 3-minute working on Turbo, the light will automatically step down by a few lumens to reduce temperature.
When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness
level until Eco output is reached. When this happens in Eco output mode, the flashlight blinks three times every five minutes to remind you to replace the batteries. To ensure normal use, the flashlight will not turn off automatically and will work till the batteries protection activate.
Note: 1. The light can be lit both with 2 and 4 batteries, insert any group of batteries as the location hole shown, the light works normal. 2. When the battery level gets too low, turning up the brightness will activate the battery protection, thus the light will switch off automatically. Take out the batteries and reload, the light will activate on Low, or replace batteries for normal use.
Unscrew the tail cap to insert the battery with the polarity markings correct direction according to the signs on the bottom with the anode side (+) towards the light head, then screw the tail cap back on.