How to connect the solar panel to the LED light to make it light

Controlled by solar controller, it supplies power to solar light source LED energy-saving lamp

Use a diode string between the battery and the battery board to prevent reverse charging.

1. The solar panel in the sky receives solar radiation and generates electric energy in the form of chemical energy, which is stored in the battery pack.
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2. At night, it is controlled by the solar controller to supply power to the solar lamp light source LED energy-saving lamp to make it glow.

3. When the brightness is higher than the set value during the day, the solar controller will control the output off, the solar energy lamp will stop emitting light, and the battery will continue to charge automatically.

4. The main role of solar cells is to generate electricity.

5. The mainstream of the power generation market is crystalline silicon solar cells and thin film solar cells, both of which have advantages and disadvantages.

6. Crystalline silicon solar cells have relatively low equipment costs, but high consumption and cell costs, but also high photoelectric conversion efficiency. It is suitable for generating electricity in outdoor sunlight.

1. Core Components Required (Must-Have)

2. Why Direct Connection (Solar Panel → LED) Fails

• Unstable voltage/current: Solar panel output depends on sunlight (e.g., 18V open-circuit voltage in strong light, near 0V at dusk). LEDs need stable voltage (e.g., 12V), so direct connection causes flickering or burnout.
• No energy storage: The LED will only light when the sun is shining (no light at night).
• Battery damage risk: Without a charge controller, the battery will overcharge (swell/explode) or over-discharge (permanent damage).

3. Step-by-Step Connection Method (12V System as Example)