Fenix HM71R Manual page 4

Warning: *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 cap to insert the battery with the anode side (+) towards the inside, then screw the cap back
on.
Charging
1. Uncover the anti-dust cap and plug the USB Type-C side of the charging cable into the charging port of
the lamp.
2. The normal charging time of the included Fenix ARB-L21-5000 V2.0 is about 4 hours (5V/2A) with the
lamp being switched off.
3. The indicator will display red while charging and turn green when fully charged.
*
This only works with Fenix ARB-L21-5000 V2.0 battery.
Note:
1. Recharge a stored headlamp every four months to maintain optimal battery performance.
2. When charging, the Low output level of Spotlight mode can be used. The headlamp will not
automatically power on after full charging.
3. When charging is complete, replace the anti-dust cap to ensure the waterproof and dustproof
ability.
Battery Level Indication
With the lamp switched off, single click the switch to check the battery status, the indicator will last for 3
seconds.
Green light on: saturated 100% - 80%
Green light flashes: sufficient 80% - 50%
Red light on: poor 50% - 20%
Red light flashes: critical 20% - 1%
Note: This only works with Fenix ARB-L21-5000 V2.0 battery.