Sony SRS-X7 Help Manual page 127

When the CHARGE indicator flashes slowly, the battery is running low and needs to be charged by connecting an AC
outlet via the AC adaptor.
If the CHARGE indicator flashes 3 times and goes off when you turn on the speaker, the battery is empty and needs
to be charged by connecting an AC outlet via the AC adaptor.
Note
When you switch the power source between AC adaptor and battery by connecting/disconnecting the AC adaptor, the
speaker stops sound output for a short while. This is not a malfunction.
The maximum power output will be lower when the AC adaptor is disconnected.
In an extremely hot environment, charging of the battery will stop.
Even if you do not intend to use the speaker for a long time, charge the battery to its full capacity once every 6
months to maintain its performance.
Related Topic
Turning the power on
Charging USB devices, such as smartphones
Notes on charging
Disposing of the speaker
Notes on use
4-537-384-11(2)
Copyright 2014 Sony Corporation
115