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Solar Charge Controller User Manual
1. PWM Control Charger
2. Adjustable Loading Timer
3. Adjustable Light On + Delay Off Timer
4.12V and 24V Battery Auto sensing
Solar Charge Controller is battery charger that can charge batteries by the power from the solar panels. The charge controller is intelligent for charging batteries, using MCU and professional software to control the step of charging, can prolong the batteries life.
It has full self protection, protection of overload, short circuit, reverse connection, over charging and over discharging etc.
This model controller is 12V/24 Battery Auto-Sensing.
When the Battery is connected to the Charge controller, the controller will detect the voltage of the battery first, then it will decide how to charge the battery connected.
The controller has 1 LCD displayer, 1 button, and 6 terminals covered with the
cover, see the picture 1.
The LCD has two-row, it will display the voltage of battery, the charging state, the DC output ON/OFF state, timer information and light control & delay time information, see picture 2 and
There are 4 areas on the panel of LCD. Left-up displays the voltage of battery. Left-down is a bar, when the sun is shining,
and the solar panel is charging the battery, the bar will rotate from left to right,
and the length will be from short to long; when there is no sunshine, the bar will
not rotate, just display the state of the battery, if the battery is full, the bar is
long, and if the battery is empty, then the bar is short. Right-up displays the regular time or the light control state. Right-down display the DC output state,
if the DC output is on, then it will display “Load: Y” if the DC output if off,then
it will display “Load: N”, if the load is too big, an overload is caused, it will
display “Load: O”, and if the load is short circuit, the it will display “Load: S”.
Connecting the solar panel to the solar panel terminals of the charger, “+” to “+”
and “-“ to “-“.
Connecting the battery to the battery terminals of the charger, “+” to “+” and “-“ to “-“.
Connecting the DC load to the load terminals of the charge, take care of the “+”
and “-“ of the DC output.
If the controller isn't at the setup state, regular time state, or light control and
delay time state, press the power button, will control the DC output ON or Off.
Pressing the power button for about 2 seconds, the right-up area will show “Time :00”, and the figures will flash, then you release this button immediately,
it indicates that the controller enters the timer setup state, at this state,every
press of the power button will make the figures change from “00” to “15”, the
figures indicate the power on time of the DC output , for example, if you change
the digital as “03”,then the charge will switch on the DC output and will auto switch off the DC output in 3 hours, If the figures are “00”,it means that the regular
timer is invalid. When you don’t press the button for about 4 seconds,then the
controller will quit the setup state automatically.
Pressing the power button for about 4 second, the right-up area will show
“L+D :00”,and the figures are flashing,then you release this button, it indicates
that the charger enters the light control and delay time setup state,at this state,
every press of the power button will make the digital change from “00” to “15”,
figures indicate the delay time of the load, for example, if you change the digital as
“03”, then the charge will switch on the DC output when the night is coming and it
will auto switch off the DC output in 3 hours. When you don’t press the button for
about 4 seconds, then the controller will quit the setup state automatically. When
you set it as “L+D :00”, then it means the controller is at light control and no delay
time state, it will switch on the DC output when the night is coming, and will switch
off the DC output when the day time is coming. When the controller is at the light
control state or light control and delay time state, you can’t switch on the DC by the button in day time, but you can switch off the DC output at night. If you
don’t want the light control function, just set the controller to “Time :00” state.
When the voltage of the battery is too low, the controller will automatically switch off the DC output, in order to protect the battery to be over-discharged.
1) SUN- SC40B/1224 ( 12V/24V Battery Auto Sensing)
Rated Cable Charging Current
Rated Load Current
Overload, Short Circuit Protection
No load current
≤20 m A
Charging Circuit Voltage Drop
Not more than 0.26V
Discharging Circuit Voltage Drop
Not more than 0.15V
DC Charge Voltage
Charge for the PWM pulse width modulation, the control point voltage for different discharge rates of intelligent compensation amendment;
Operating temperature -20°C to 40°C
Storage temperature -20°C to 50°C
1 year warranty
Founded in 2003, Ningbo National Hi-Tech Park Sunshine Technology Co., Ltd. specializes in research, design, development, manufacturing and marketing of solar & wind turbine power products and related components.
Having been led by professors and senior engineers for 6 years, nowadays we have become one of the leading manufacturers and have developed a series of products, such as off-grid inverters, solar grid tie inverters,wind turbine grid tie inverters, solar panels, controllers, etc.
Our technical team, by timely following up market trend and studying customers' needs, is continuously designing and developing new products.
Our quality control team ensures every procedure is under strict quality control.
Our professional marketing team who are dedicated and experienced offer the best service to satisfy our customers’ needs.
Our products are very well accepted by our customers from all over the world owning to our innovation, value andservice.
We are good at designing and producing small solar and wind power systems.
We offer the best solutions for home and public electricity generating plan.
We sincerely welcome our friends and customers to cooperate with us. OEM & ODM orders are also welcomed.
It is our dream and mission to make a "Green world, Clean world".