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7. Charging the battery
The headlight comes with an integral lithium-ion-battery that must be charged before first use. To
charge, open the rear cover on the headlight, or remove the Eyro headlight from the package. Connect
the enclosed USB cable to the Micro-USB socket
enclosed power supply unit, to another standard USB power supply unit (max. 1,000 mA, 5 V) or to a
computer. During the charging process, the LED on the switch shines blue. When the LED light is off, the
charging process is complete. When charging with an alternative device or computer, the LED on the
switch flashes blue. Overcharging is basically impossible as the power supply is automatically switched
off. Ensure to charge the battery at temperatures above 0°C only. Charging is also possible when the
headlight is switched on.
WARNING
As a precaution, never leave the headlight unattended during the charging process and
place it on a fireproof surface.
!
Please note: During the charging process, the headlight is not protected against splash and rain
water. The headlight can also be charged when switched on. We do not assume any liability for damage
likely to be caused by moisture entering the headlight during the charging process.
!
How to preserve the battery: When not in use over an extended period of time, store the headlight in a
cool and dry environment as well as with approx. 30 - 50 % residual capacity. If the battery is discharged
to below 10% capacity and then fully charged again, the battery recalibrates itself. Occasional calibration
helps to ensure that the remaining lighting capacity is always displayed as accurately as possible.
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don the headlight. Connect the USB cable to the
Duration of charging
Using the original power pack from Busch + Müller:
Eyro: abt. 5 hrs. /Core: abt. 3.5 hrs. / Fyre: abt. 5 hrs.
Using other USB power packs or USB computer connector: extended charging times.
We do not accept liability for damage caused by using third-party power supply units.
Charging the battery while cycling
With E-Werk (Type 361) or USB-Werk (Type 361BW) from Busch + Müller, the current generated by
a hub dynamo can be used to charge the headlight while cycling.
8. Operation & display
High-Power: Core abt. 50 Lux / Fyre and Eyro abt. 30 Lux, shines consistently bright for more
than 3 hrs.
Low-Power: Core abt 12 Lux/ Fyre and Eyro abt. 10 Lux, shines consistently bright for abt. 15 hrs.
If the battery charge falls below a certain level, the High-Power mode automatically switches to
Low-Power. In order to protect the battery against exhaustive discharge, the High-Power mode is
then no longer possible.
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