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Using the headphones
10 | IE 80S BT
Using the headphones
Information on the rechargeable battery
and the charging process
The headphones have a built-in rechargeable battery. A complete
charging cycle takes about 1.5 hours.
Before using the headphones
f
or the first time, charge the rechargeable battery for a complete
charging cycle without interruption.
When the headphones are being charged, the LED lights up (
> 6).
When the battery charge drops to a critical level, a voice prompt asks
y
ou to recharge the headphones (“Recharge headset”).
Sennheiser recommends using the supplied USB cable and a com-
patible standard USB power supply for charging the headphones.
Charging the headphones' rechargeable
battery
USB-A
USB-C
1,5 HRS
Pulsing
USB-C
USB Micro-B
1. Connect the USB-C connector of the USB cable to the USB socket of
the headphones.
2. Connect the USB-A connector to a corresponding sock
et of a USB
power source (to be ordered separately). Make sure that the USB
power source is connected to the power supply system.
The charging process of the headphones b
egins. The LED displays
the charge status:
LED Meaning
pulses red Rechargeable battery is being charged
(charge level is very low)
pulses yellow Rechargeable battery is being charged
lights up
green
Rechargeable battery is fully charged
flashes red A charging error/battery error has
occurred (> 24)
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