Use basic functions >
Charge and store the battery at 41˚ F ~ 95˚ F (5˚ C ~ 35˚ C).
Do not charge the battery for more than 12 hours or leave the
battery fully discharged for a long time. Doing so may shorten
the battery life.
Depending on how you use your player, actual battery life may
vary and may be shorter than speciﬁ ed.
The charging time may differ depending on your PC's
If you want to charge the battery on your laptop, make sure
that the laptop's battery is full or the laptop is plugged into
a power source.
The player can only be charged by connecting to your
PC with the USB cable. Do not use a separate USB AC
Adapter as it may not charge the battery or allow proper
operation of the player.
Connect to a PC and charge the battery