Yueqing Jyins Electric Technology Co., Ltd.
Main products:Meter,Panel Meter,Switching Power Supply,Digital Meter,Power Adapter
Contact Us
  • Contact Person : Ms. Jiang Rita
  • Company Name : Yueqing Jyins Electric Technology Co., Ltd.
  • Tel : 0086-577-62796272
  • Fax : 0086-577-62792655
  • Address : Zhejiang,wenzhou,jyins industrial zone,liushi
  • Country/Region : China
  • Zip : 325604

Solar Charge Controller circuit

Solar Charge Controller circuit
Product Detailed
Good quality and favourable price 12V 30A Solar Charge Controller High cost performance product.

12V 30A Solar charge controller circuit 

problems & troubleshooting:



Sunlight on panel but green charge LED not on.

Check solar panel output    and cable connections are correct and secure.

The charge LED flashes fast.

System overvoltage protection is working.

Open circuit in the battery.

Check battery cable connections.

Charging circuit damaged.

Load LED is on but no output.

Load open circuit.Check cablesand connections and any other load switches.

Load LED is on and flashing fast. No output.

Check output for short circuit or gross over-load. Remove the load and switch output ON, Controller will resume after 30 seconds.

Load LED is on and flashing slowly. No output.

Overload has occurred. Remove sufficient load and switch output On. Controller will resume in 30 seconds.

System LED flashing RED with no output.

Battery is over discharged   and load disconnected. The load will be reconnected when battery charged again.







Rated charge current





Rated load current





Work voltage

12;  24V;

Over load, short circuit protection

1.25 rated load current 60sec, 1.5 rated loads current 5sec, over load protection action.

≥3 Rated load current short circuit protection action.

Self-consumption current

≤ 6 mA

Charge circuit voltage drop


Load circuit voltage drop


Over voltage protection

17V; ×2/24V

Work temperature

Industry stage:-35°C to +55°C;Commercial stage -5°C to +50°C

Boost charge voltage

14.6V;×2/24V; (keep 10min)(only used when overdischarging)

Direct charge voltage

14.4V; ×2/24V; (keep 10min)

Float charge voltage

13.6V; ×2/24V;

charge return voltage


Temperature compensation

-5mv/°C/2v(Boost charge, Direct charge, Float charge, charge return voltage);

Lower voltage indicate

12.0V; ×2/24V;

Over discharge voltage

11.1V(no load)- modified voltage by discharge rate of battery; ×2/24V;

Over discharge return voltage

12.6 V; ×2/24V

Over-discharge pressed return voltage

12.4V; ×2/24V

Control mode

PWM charge mode; modified discharge voltage by the discharge rate

Solar Charge Controller circuit

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