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. [Details]

• 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. [Details]

• Display is too bright.

• The battery life will be longer by adjusting the brightness of the screen.

• 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.