3.7V 7.4V 11.1V Lithium Battery Solar Lawn Light Circuit Board Solar Light Controller Control Board 3A

Product selling point

1: Wide range of applications

2: Small size

3: short circuit protection; reverse connection protection; overload protection; undervoltage protection.

4: Simple to use

5: High quality material

Automatic voltage identification; activation function with power loss; imported components

Short circuit protection; reverse connection protection; overload protection; undervoltage protection.

3.7V battery fully charged voltage 4.2V, over discharge protection 3.2V

7.4V battery fully charged voltage 8.4V, over discharge protection 6.4V

11.1V battery fully charged voltage 12.6V, over discharge protection 9.6V

For detailed parameters, please refer to the manual

Panel voltage <30V

Recommendation:

Please charge the 3.7v battery with a 5v battery board, and the power is below 11W;

Please charge the 7.4v battery with a 9-12v battery board, and the power is below 22W;

Please charge the 11.1v battery with the 18v battery board, and the power is below 36W.

Package Include:

1*3.7V 7.4V 11.1V lithium battery solar lawn light circuit board solar light controller control board 3A

The product is an LED solar lawn light controller board that operates at 3.7V, 7.4V, or 11.1V. The module measures 36.8mm x 61mm (1.44

This solar-powered lawn light controller board features charging and discharge indicators. It includes J33218 for charging and Iqoloju for discharge. Additionally, it has UI indicators for battery levels. Suitable for use with solar panels and batteries, this product can handle up to 3A.

Product selling point:

1. Using high-quality materials, the quality is guaranteed

2. Photovoltaic solar charge and discharge automatic control switch, suitable for a variety of battery voltages

3. Simple and portable to use

4. Charge during the day, automatically turn on the light when it is dark, and automatically turn off the light when it is bright

5. The low-power controller is suitable for solar garden lights, lawn lights, colorful string lights, small street lights, etc.

Features:

Charging in the daytime, automatically turning on the lights at night, and automatically turning off the lights at dawn, the output voltage is the output voltage when the battery has no voltage. The circuit controls the output by detecting the change of the voltage generated by the solar panel, without the need for photosensitive elements; it is suitable for a variety of batteries.

Wiring method:

1.B+B- connected lithium battery

2. S+ S- connect to solar panel

3. L+L- output

Wiring sequence:

1: Connect the lithium battery, the battery must have the corresponding protection board

2: Connect to the LED, the lithium battery has power and the LED lights up

3: Connect to the solar panel. At this time, the solar panel is illuminated with light, and the LED is off, and the LED is on without light.

The switch can be installed if it needs to be turned off at night or the switch interface SW has been reserved for transportation and storage.

Precautions:

1: The stable working output current of the control board cannot be greater than 600ma, otherwise it may cause output protection

2: Charging and anti-backflow without overcharge and overdischarge protection Lithium batteries must be used with corresponding protection boards (mobile phone batteries all have 3.7v protection, and more than 18650 do not have them. 3.7v protection boards cannot be used in series)

3: Pay attention to waterproofing and insulation

4: LED lamps cannot use boost drive

5: The battery voltage of the controller is the output voltage, unlimited current and voltage limiting, 2V3V LED lamp beads cannot be used directly, it needs to be driven by a step-down constant current or a series current limiting resistor, and the output current is the maximum working current, not constant current

Special Note:

1: The output power is the actual power, please confirm the actual power consumption of the load before use

2: Direct access to 3Vled may damage the controller or LED

3: The battery must be equipped with a protective plate, and the battery voltage must match the open circuit voltage of the solar panel

Package list:

Solar control switch circuit board*1

Control board suitable for various lithium battery voltages (3.7V, 7.4V, 11.1V). Automatically charges and discharges solar energy, turning on LED lights at night and off at dawn. Ideal for low-power controllers, such as solar garden lights, lawn lights, string lights, and small streetlights.

This circuit board controller is designed for 3.7V, 7.4V, or 11.1V lithium batteries. The detection process checks if the connection is correct, whether the LED light turns on, and if there are any solder joints or adhesion issues. It also detects if the battery has electricity, whether the LED is connected reversely, or if the resistor is not present. Additionally, it tests for output brightness, short lighting time, insufficient solar power, and insulation issues with the circuit board. If the solar panel is installed more than 20 meters away from the test location, it may not generate enough electricity to power the light. During normal night testing without streetlights, the infrared camera can also detect if the photovoltaic panel generates electricity. The controller will always turn off if the solar panel is connected in reverse or short-circuited. After replacing the control board and LED, if the issue persists, it may indicate insufficient battery voltage or a faulty solar panel.