A. Solar power supply
Put the solar panel surface toward the sun.
Make sure that there is no shelter between the panel and the sun.
The real charging current is affected by the sunlight intensity.
B. External power supply
Put the DC plug of the special power cord into the “IN DC5V” port.
Then put the USB port into PC or power adapter. It charges automatically.
When the pump is on standby mode, short press the “PUMP ON/OFF” button,the blue LEDs will light up and show the battery capacity.