Switches
The round tail switch is the tactical switch for instant activation.
The tail FlexiSensa Control is the functional switch for mode selection.
On/off
Tap the tactical switch to silently and momentarily turn on the light, releasing the light will go out.
Fully press the tactical switch till the “click” sound is heard to constantly turn on the light, press again the light will go out.
Mode Switching
In any state, rotate the FlexiSensa Control switch to select the needed mode.
Tactical Mode
With the light switched on, tap the tactical switch to cycle through Turbo→Strobe. The light memorizes the last selected output including Strobe.
Duty Mode
With the light switched on, tap the tactical switch to cycle through Turbo→High→Med→Low. The light memorizes the last selected output.
Lock/Out mode
In any state, rotate the FlexiSensa Control switch to lock mode to turn off and lock the flashlight.
With the light switched on, rotate the FlexiSensa Control switch to Tactical mode or Duty mode to unlock the light and enter the previously used output.
Intelligent Memory Circuit
In Tactical or Duty mode, the light memorizes the last selected output including Strobe. When turned on again the previously used output will be recalled.
Intelligent Overheat Protection
The light will accumulate a lot of heat when used on Turbo output levels for extended periods. When the light reaches a temperature of 60°C or above, the light will automatically step down a few lumens to reduce the temperature. When the temperature drops below 60°C, it will then allow the user for the reselection of Turbo mode.
Battery Specifications
Type | Dimensions | Nominal Voltage | Usability |
|
Fenix ARB-L21-5000 V2.0 | 21700 | 3.6 V | Recommended | √ √ |
Fenix ARB-L21-5000U | 21700 | 3.6 V | Recommended | √ √ |
Fenix ARB-L21-4000P | 21700 | 3.6 V | Recommended | √ √ |
Other types of 21700 battery | 21700 | 3.6 V | Caution* | ! |
* It is prohibited to use 18650, 16340 or CR123A batteries.
* 21700 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.
Battery Replacement
Unscrew the light tail and insert the battery with the anode side (+) towards the light head, then screw the light tail back on.
Charging
- Loosen the light head counterclockwise to reveal the USB Type-C charging port and plug the USB A socket of the charging cable into an appropriate A/C powered USB plug/outlet, then connect the USB Type-C socket of the charging cable to the light.
- The indicator will display red while charging and will turn green when fully charged.
- Once charging is completed, be sure to tighten the light head to maintain the dustproof and waterproof ability.
Note:
- When charging fails or the battery is reversely connected, the battery indicator will flash red to remind the user to check the battery.
- The normal charging time of the included Fenix ARB-L21-5000 V2.0 is approximately 3.5 hours from depletion to full charging.
- Recharge a stored light every four months to maintain the optimum performance of the battery.
- The light is unavailable while charging.
Note: This only works with Fenix ARB-L21 series rechargeable battery.
Battery Level Indication
Each time the light is turned on, the indicator (unscrew the light head to see) will indicate the battery level and will last for 3 seconds.
Green light on: saturated 100% - 85%
Green light flashes: sufficient 85% - 50%
Red light on: poor 50% - 25%
Red light flashes: critical 25% - 1%
Note: This only works with Fenix ARB-L21 series rechargeable battery.
Low-voltage Warning
When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level until Low output is reached. When this happens in Low output, the light blinks 3 times every 5 minutes to remind you to timely recharge or replace the battery.
Note: This only works with Fenix ARB-L21 series rechargeable battery.
Usage and Maintenance
- Disassembling the sealed head can cause damage to the lamp and will void the warranty.
- Fenix recommends using an excellent quality Fenix battery.
- Take out the battery to prevent accidental activation during storage or transportation.
- If the lamp will not be used for an extended period, remove the battery, or the lamp could be damaged by electrolyte leakage.
- Unscrew the tail cap or remove the battery to prevent accidental activation during storage or transportation.
- Long-term use can result in O-ring wear. To maintain a proper water seal, replace the ring with an approved spare.
- Periodic cleaning of the battery contacts improves the lamp's performance as dirty contacts may cause the lamp to flicker, shine intermittently or even fail to illuminate for the following reasons:
A: Low battery.
Solution: Recharge or replace the battery (Ensure the battery is inserted according to the manufacturer’s specifications).
B: The contact point or contact of the battery or flashlight is dirty.
Solution: Clean the contact points with a cotton swab soaked in rubbing alcohol.
If the above methods don't work, please contact the distributor.
Warning
- Do place this flashlight in the reach of children!
- Do NOT shine the flashlight directly into the eyes of anyone!
- Do NOT shine flammable objects at close range, to avoid burning objects or causing danger due to high temperature!
- Do NOT use the flashlight in inappropriate ways such as biting in the mouth, to avoid personal injury or life threats when the flashlight or internal battery fails!
- This flashlight will accumulate a lot of heat while working, resulting in a high temperature of the flashlight shell. Pay attention to safe use to avoid scalding.
- Turn off and lock the flashlight or remove the battery from the flashlight to prevent accidental activation when the flashlight is placed in a closed and flammable environment such as pockets and backpacks!
- The LED of this flashlight is not replaceable; so the whole flashlight should be replaced when the LED reaches the end of its life.
