Type
Dimension
ARB‐L21 Series
ARB‐L18 Series
Non‐rechargeable
CR123A
Battery (Lithium)
Rechargeable
Battery (Li‐ion)
Rechargeable
Battery (Li‐ion)
* Do not mix batteries of different brands, sizes, capacities or types. Doing so may cause damage to the headlamp
or the batteries being used.
* Fenix ARB‐L18 Series rechargeable Li‐ion battery can also be used together with the ALF‐18 battery holder.
* 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
Open the cap to insert the battery in accordance with the polarity marks, then replace the cap
and fasten the latch.
Charging
Open the cap and plug the USB Type‐C side of the charging cable into the charging port of
the battery case.
Nominal
Voltage
21700
3.6V
18650
3.6V
3V
16340
3.6V
18650
3.6V
Usability
Recommended
Usable (with ALF‐18 *)
Banned
Banned
Banned
√√
√
×
×
×
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