Sony NW-E002 User Guide - Page 51

Table of Contents Menu Index 51 Advanced Features Maximizing Battery Life By following a few simple guidelines, you can extend the playing time available from a battery charge. Screen display auto-off Setting the display to turn off after a certain period of time of not using the player (approx. 15 seconds), can help to save battery power. See "Saving Power Consumption (Power Save)" ( page 41) for the setting method. Adjust song format and bit rate The playing time varies, as battery charge can be affected by the format and bit rate of the audio songs that are played. For example, a full battery charge offers about 27 hours of playing time for songs in ATRAC format at 48 kbps, but only about 19 hours for songs in WMA format at 128 kbps. The exact playing time available from a full charge varies with the operating conditions and environment of the player. Note • Do not leave the player connected for extended periods to a laptop computer that is not connected to AC power, because the player may discharge the computer's battery.