Sennheiser ConC 400 Series Instruction Manual page 8

Product overview
8 | ConC 400
Overview of the LED display of the
charging case
When a USB cable is connected, the LED display of the charging
case permanently displays the charging process:
LED
flashes red
flashes green
lights up green
lights up red
When you close the lid of the charging case, the LED display goes off
after 15 seconds.
When no USB cable is connected and you open or close the lid of the
charging case, the LED display of the charging case displays the bat-
tery charge status for 15 seconds:
LED
flashes red for
15 sec
lights up green
for 15 sec
lights up red
Status
... charging case is being charged
... charge status < 10 %
... charging case is being charged
... charge status > 10 %
... charging case is fully charged
... charging error/battery error (> 35)
15s
Status
... charge status < 10 %
... charge status > 10 %
... charging case is fully charged
... charging error/battery error (> 35)