Power Sources; For Your Reference - Panasonic RP-WF810 Instrucciones De Funcionamiento

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Power Sources

Recharge the batteries before using the unit.
Be sure the
and
way.
Insert the two rechargeable batteries
(included) into the left hand earpiece
(L).
Push up on the indent to open the lid.
Close the compartment lid fi rmly after inserting the
batteries.
Connect the AC adaptor to the
transmitter then the transmitter's
[CHG]
cable
headphones.
The OPR/CHG indicator goes green and charging
starts.
The indicator goes out when the batteries are fully
charged.
● Approximate recharging and operating time
● The adaptor is different for the UK.
After recharging
Disconnect the [CHG] cable.
To check the remaining battery strength:
The OPR indicator on the left hand earpiece (L) dims or
fails to light when the batteries are weak. Recharge the
batteries.
Service life of the batteries:
If the OPR indicator on the left hand earpiece (L) dims
or fails to light even after recharging the batteries, they
have come to the end of their serviceable life and need
to be replaced.
2 Nickel-metal hydride rechargeable batteries (Part no.:
HHR-4AGE/2B).
The batteries can be recharged about 500 times. They
need to be replaced when operating time dramatically
shortens even after recharging.

For your reference:

Dry cell batteries (R03/LR03, AAA) can be also used to
power the headphones.
Do not attempt to recharge them.
ends are inserted the right
to
[CHG]
on
Recharging: 24 hours
Operation: 20 hours
the
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