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then screw the light tail back on.
Charging
1. 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 electrical outlet, then connect the USB Type-C socket
of the charging cable to the light.
2. The indicator will display red while charging and will turn green when fully charged.
3. Once charging is completed, be sure to tighten the light head to maintain the dustproof and
waterproof ability.
Note:
1. When charging fails or the battery is reversely connected, the battery indicator will flash red to
remind the user to check the battery.
2. The normal charging time of the included Fenix ARB-L21-5000 V2.0 is approximately 3 hours
from depletion to full charging. The light is unavailable while charging.
3. When the charging port is exposed or the light neck is not tightened, the battery indicator
flashes and the light is unavailable.
4. Recharge a stored light every four months to maintain the optimum performance of the
battery.
Note: This only works with Fenix ARB-L21 series 21700 rechargeable Li-ion battery.
Battery Level Indication
Unscrew the light neck to see the battery indicator. Each time the light is turned on, the battery
indicator will flash to show the remaining battery power.
Green light flashes: 100% - 30%
Red light flashes: 30% - 1%
Note: This only works with Fenix ARB-L21 series 21700 rechargeable Li-ion battery.
Intelligent Overheat Protection
The light will accumulate a lot of heat when used on High mode for extended periods. When the
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