Sony NW-E002F Operation 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. Do not let your computer sleep when the player is connected If the computer enters a power saving mode, such as the system suspend, sleep or hibernation while the player is connected to the computer directly, the player's battery is not charged. Instead, the player continues to draw power from the battery, discharging it. 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.