This Solar Charger Controller can automatically manage the work of Solar Panel and battery in solar system. It's widely used for the solar light on street, garden, park, etc. Solar charger controller can control the battery recharging automatically and make sure the batteries work longer and safer.
Characteristics of the function:
Working for Li-ion battery‘s charging control
Voltage: 7.4V
Current: 3A
Working temperature: -30 ℃-50℃
Equipped with the MCU, artificially controlled.
Equipped with device to avoid the overcharge, over release, electronic short circuit, over loading, battery inversely connecting, solar battery inversely connecting.
Use the battery discharge rate characteristics to correct discharge control.
The series connection PWM circuit is implemented to form the major charging circuit, make the voltage loss 50% or  lower than the diode charging circuit, and the charging efficiency 3%-6% higher than the non-PWM.
The LED displayer shows the batteries current situation to make the customer get the information of the batteries.
Three operatiing modes can be selected: normally open mode, the pure light control mode and light control plus timing mode.

Specifications:
Indicator LED:
LED State Function
CHARGE off Night condition or the battery not connected
Red light on state of charge
POWER off output protection under state control or light output shutdown
Green light on Output Normal

 
 
 
 
 
 
 
 
 
 
Install and use:
The preparation of the conducting wire:calculate the length of the wire ,and then figure out the installation place,make sure the length of the wire is reasonable to decrease the loss of the electricity.
Before connecting the battery firstly, please pay attention to the anode and the cathode to avoid the inverse connection.the indicator light of the battery will work if the connection is correct,otherwise,it will not ,but the component of the controller will not be damaged.
Before connecting the wire of the solar panel, pay attention to the anode and the cathode to avoid the inverse connection.if the connection is correct,the indicator light of “CHARGE”will be on or flash 10 seconds later after laying outside under the sun,otherwise,please check the connection.make sure the solar energy panel is laid outdoors under the sunshine.
Before connect the load at the end, please pay attention to the anode and the cathode to avoid the inverse connection .if inverse connection ,the led lamp may be damaged.
Before installed, system need to be checked carefully. Identify problems, timely maintenance and repair.

Warnings for usage:
The batteries has stored much energy,please keep the batteries from the short circuit under any circumstances,we strongly recommend connecting the batteries with the fuse.
Please avoid the short circuit wire and the terminal,for the wire and the terminal may generate voltage two times