According to the the voltage of battery, controller will adjust the
charging current and decide if to supply power to the loads.
1. Generally keep the battery on full voltage condition.
2. Prevent the battery from over-charging.
3. Prevent the battery from over-discharging.
4. Prevent the battery from supplying power to solar panels during
according to indication in the picture:
1. Connect“+” and “-” poles of battery with the correct ports on
the Controller (the third and fourth wires from the left).
2. Connect “+” and “-”poles of solar panels with the correct ports
on the controller (the first and second wires from the left).
3. Connect “+” and “-” poles of load with the correct ports on the
controller (the fifth and sixth wires from the left).
1. Three red LEDs. They indicate the voltage of battery. It
indicates the voltage enough that three red LEDs are all
illumining,and the voltage not enough that there is only one red
light LEDs illumining.
2. One green LED. The battery is strongly charged when this light
is illumining, the battery is floatingly charged when this LED is
flickering, and the battery has stopped charging when the LED
3. The voltage of battery is little low when one red LEDs or two
red LEDs are illumining, maybe the load can’t naturally work. But
when the voltage of battery reaches 12.6v, the load will be allowed
automatically to start work.
1. Please check the rated voltage of solar panels, battery, and
load before connection. Their rated voltage should be 12v.
2. Pay more attention to “+” and “-” poles of solar panels,
battery, controller and loads during the process of connection.
3. The rated current of solar panels and loads are kept lower than
the one of controller.
12 or 24V
Voltage of stop power supply
*10.8V or 21.6V
rated charging current
Voltage of resume power supply
*12.6V or 25.2V
Rated loading current
Voltage of stop charge
*14V or 28V
-20 ~ +60?