Automatic Solar Panel Battery Charger Board Night Light LED Courtyard Garden Lamp Control Switch Delay Relay Module Power-on/off
 
This controller can only be used for 3.7v lithium battery and 6v solar panel
Charge during the day, automatically turn on the light when it is dark, and automatically turn off the light when it is bright
Anti-backflow, constant current LED drive output, short circuit, overcharge and over discharge protection

Parameter:
Only use solar panels with an open circuit voltage of 5-7v
3.7v light board power size can be used
The working current of the 3v lamp board must be greater than the output current of the controller, otherwise the lamp will not be able to withstand it and burn the lamp
There is only one difference between 600ma and 1000ma
It is recommended that 6v is less than 25w for solar panels, please do not connect to solar panels greater than 6v30w
Anti-overdischarge voltage 2.9v, recovery voltage 3v, anti-overcharge 4.25v, recovery charging 4.1v

Wiring:
Connect to LED - Notice! Distinguish positive and negative and LED operating current
Before connecting to the battery, be sure to measure the battery voltage between 3.5v-4.2v before connecting. - It is strictly forbidden to reverse the positive and negative poles of the battery.
When the battery is connected and the LED lights up, it means the connection is correct.  - If it does not light up, please disconnect the battery in time to check whether the battery voltage, LED and battery +- are reversed.

Precautions:
Use 5-7v solar panels, prohibit the use of solar panels with power greater than 8v and greater than 30w
Lithium battery +- pole is strictly prohibited to be reversed, please connect it after measurement, otherwise it may damage the controller. Only use the nominal 3.7v fully charged 4.2 or 4.3v lithium battery
If the working current of the LED is less than 600/1000ma, please use the corresponding current limiting resistor in series
Pay attention to strengthening the heat dissipation of the LED wick