The operation indicator does not turn off during charging. - Model SC-GNW10

Even when fully charged, SC-GNW10 may start charging again if you unplug the USB cable and then plug it in again. (For a maximum of about 10 minutes).
When using a USB AC adaptor that is capable of supplying an output current of less than 1500 mA at 5 V DC, proper charging may not be possible. Use a USB AC adaptor that is capable of supplying an output current of at least 1500 mA at 5 V DC.