Features:
Charge during the day ,turn on the lights automatically in the evening, and turn off the lights automatically during the day.
0.8A maximum output
The circuit controls the output of the solar panel to detect the voltage change without the need for a photosensitive element
Output over-current protection, short circuit protection
Adaptive Battery: 3.7/4.2V 7.4/8.4V 11.1/12.6V 14.6/16.8V

Precautions:
1: The output current cannot exceed 0.8A
2: Charging against backflow, but without overcharging and overdischarging
3:18650 lithium battery needs to be protected with a protective plate (cell phone battery is not needed)
4: LED lights can not use boost drive
5: The output voltage is not adjustable, and it must be connected to the current limiting