4
3.5 Charging the Battery
Be sure to charge the battery fully before initial use, since reduction of state of charge (SoC) may lead to
low battery alarm. It is recommended that your radio remain powered off during charging.
To charge the battery, insert the USB plug of the power adapter into the USB connector of the radio, and
then connect the power adapter to the main supply.
The charging indicator on the radio shows the charging status. For details, see the following table.
The battery is fully charged.
3.6 Checking the Battery Power
You can check the current battery power by holding down the Battery Power Indicator key
programmed by your dealer, and release the key to exit. The following table lists battery power
indications:
Under the low battery threshold. Please
recharge or replace the battery.