Sennheiser 2020 - Manual (Page 33)

31
Using the components
Charging the receivers' built-in rechargeable batteries
̈
Place the receiver into one of the charging
compartments for receivers
´
/
µ
(light blue in the
diagram).
The LED
·
lights up (see table).
Notes:
y Charging a completely discharged rechargeable
battery takes approx. 2½ hours at room
temperature.
y However, the charging process may take longer if:
– the rechargeable battery is deep discharged
and first has to be reconditioned by a deep
discharge recovery charge,
– the temperature of the built-in rechargeable
battery is over 40°C or below 3°C, since, in order
to protect the rechargeable battery, the
charging process will be interrupted until the
temperature is again within the admissible
range (the LED
·
flashes red).
y An additional temperature protection prevents
overheating inside the charging case. If the
temperature inside the charging case exceeds
safety limits, the charging process will be
interrupted and will only be restarted when the
charging case has cooled down.
y When not using the receivers for extended
periods of time, charge them about every six
·
µ
´
LED colour Meaning
red The built-in rechargeable battery is being
charged.
green The built-in rechargeable battery is fully
charged.
red
(flashing) The temperature of the built-in rechargea-
ble battery is over 40°C or below 3°C
yellow/
orange The built-in rechargeable battery is defec-
tive. Interrupt the charging process and
contact your Sennheiser Service.
months in order to prevent deep discharge
damage to the rechargeable batteries.