Emerson Radio MP530 - Manual (Page 12)

Follow the instructions below to charge the built-in internal Lithium battery:
POWER SOURCE
11
With the power on or off, connect the USB
cable to the unit and then to the computer;
charging will automatically begin.
NOTES:
• When charging for the first time, charge overnight for a full charge.
• After the first charge, the battery should fully charge in two to three hours.
When the bars in the battery indicator (in the display) become low (see
figure 1), recharge the battery as follows:
Batt Low Batt Full
Figure 1
1