Sony NW-A25 How To Use Manual page 188

Help Guide
malfunction.
Sample data is pre-installed on your Walkman.
Sample data is not installed in some countries/regions.
If you delete the sample data, you cannot restore it, and we will not
supply any replacement data.
Sony is not responsible for incomplete recording/downloading or
damaged data due to problems with your Walkman or computer.
Notes on storing lithium-ion rechargeable batteries
A lithium-ion rechargeable battery is built into your Walkman. When you
store it for a long period of time, be sure to follow the storage instructions
below.
Leaving a charged battery unused for a long period of time causes
deterioration of the battery and results in a decrease of battery
capacity. The deterioration is more severe when the battery is stored
with a full charge, and is accelerated by prolonged exposure to heat
such as when leaving your Walkman in a car while connected to the
power port. Store the Walkman at temperatures below 35 °C (95 ºF).
Charging or discharging the battery to approximately 50 % of capacity
before storing is also recommended.
The battery deteriorates when left in a depleted condition. Charge the
battery to approximately 50 % of capacity at least once every six to
twelve months to prevent deterioration.
[212] How to Use
188 sur 237
Announcement Precautions
http://helpguide.sony.net/dmp/nwa20/v1/en/print.html
08/06/16 16:25