Battery Life Is Short - Sony Walkman NWZ-F804 Help Manual

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NWZ-F804/F805/F806
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Battery life is short.

The operating temperature is below 5 °C.
Battery life becomes shorter as a result of battery characteristics. This is not a
malfunction.
Battery charging time is not sufficient.
Charge the battery until the entire battery icon becomes green.
You are using the Bluetooth function.
More battery charge is consumed because the Bluetooth function transfers data
wirelessly. The battery life will be longer if you turn off the connection whenever you
are not using it.
You are using the Wi-Fi function.
More battery charge is consumed because the Wi-Fi function transfers data wirelessly.
The battery life will be longer if you turn off the connection whenever you are not using
it.
Display is too bright.
The battery life will be longer by adjusting the brightness of the screen.
Contents list You have not used your Walkman for more than a year.
Depending on the conditions under which your Walkman is used, the battery may
have been deteriorated. Consult your nearest Sony dealer.
Usable battery life is half that when new, even after sufficiently charging the battery.
Your battery may be deteriorated. Consult your nearest Sony dealer.
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