Mio C520 - Manual (Page 14)

1.3 Connecting to AC Power and Charging the
Battery
When charging the battery for the very first time, you should charge it for at least
8 hours.
1. Slide and click the connector converter onto the AC adapter.
2. Connect the adapter cable to the bottom of your device.
3. Plug the AC adapter into a wall outlet.
4. The charge indicator glows amber when charging is in progress. Do not
disconnect your device from AC power until the battery is fully charged, the
charge indicator will turn green. This will take a couple of hours.
NOTE:
Do not immediately turn on your device after connecting the AC adapter to charge a
power-depleted battery. If you need to turn on the device again, wait for at least one
minute.
Depending on your region of purchase, the connector converter may not look exactly the
same as the picture shown.
CAUTION: For optimal performance of the lithium battery:
Do not charge the battery where the temperature is high (e.g. in direct sunlight).
There is no need to fully discharge the battery before charging. You can charge the battery
before it is discharged.
When storing the product for a long period of time, be sure to fully charge the battery at
least once every two weeks. Over discharge of the battery can affect the charging
performance.
6