The battery indicator lamp lights amber, and charging of this unit starts.
When this unit is fully charged, the battery indicator lamp turns off.
When charging is complete, disconnect the USB AC adaptor from the unit and the computer.
Approximate charging time: 3.5 hours (approximate value under Sony test condition when using AC-UD10)
See "USB AC Adaptor (for charging the unit)" for USB AC adaptors confirmed to work with this unit.