Operation Manual

English – 11 | MP-4500
Charging the Battery
The device has a rechargeable built-in polymer ion battery. The
battery of the player is charging automatically when the player is
connected to a wall outlet or a computer. Make sure the
computer has been started. You are required to charge it when
you use it for the first time.
The battery of the player is 80-percent charged in about three
hours and fully charged (
) in about five hours. If you charge the
player while loading files to the player, it might take longer.
Important
z Recommended temperature for battery charging is 0°C to 35°C.
z Fully charge it before you use the player for the first time or when
you haven’t used it for a long time.
z Charge the player right now when the “Low battery” (
) mes-
sage is displayed.
z Do not over charge or discharge the player. Over charging or
discharging will shorten the battery life.
z The battery could be over discharged if the player is not used for
a long time (over three months). To avoid over discharge, fully
charge the player every two or three month and always keep
the voltage of the battery above 50%.
z If the player is not used for a long time, keep it under the tem-
perature of 23±5°C and the moisture of 65±20% RH to maintain
the performance of the battery.