Can You Charge a Solar Panel with a Flashlight?

More and more people choose to use solar light in their daily life. At the same time, they use solar light in different places all over the world. Then why the solar light is a popular and hot sale? One reason is that they are very convent in their daily life. And solar lights can save money for them. Especially for some places, sunlight is the main resource for them if they live in a remote area. Then how to charge the solar lights in the winter or rainy days.

Sometimes the weather is unpredictable if you find that your battery is drained and there is no light. Use any of these ways to recharge your solar lights.

  • Electricity
  • Indirect sunlight and
  • Artificial light.

Can you Charge a Solar Light with Flashlight

A flashlight is an example of artificial light that you can use to Charge your solar lights. Using a flashlight to charge whole solar lights might come as a surprise. However, depending on the brightness, it is possible but relatively slow. 

Before you start to question the logic behind a flashlight charging a solar, let us explain how a solar lighting system charges. 

  • A solar lighting system has a solar panel has amorphous cells and photovoltaic cells that turn sun radiation into electricity. 
  • When the sun waves reach the solar panel, the panel collects the energy and wires it into the battery. This is what we call charging.
  • Energy from the sun is stored in the battery as chemical energy. A sensor on the panel detects darkness at night, and chemical energy is converted into electricity—the electric energy powers the LED bulbs to light up. The exact process repeats itself when daylight comes. 

Artificial light uses the same concept as sunlight energy. Charging using flashlights will be slower as it produces a low amount of Lumen. A bright flashlight produces about 100 lumens, while the sun produces 100,000 lumens. Even when on a cloudy day, the lumens produced are much more than those produced by a flashlight. 

Can You Charge a Solar Light with UV Light?

A band of UV lights identified as UVA falls under the Red visible light spectrum. A portion of the band charge solar lights but is not as effective as the sunlight or artificial light. 

The red light spectrum, where most UV lights fall, is too low to Charge a solar battery. Their wavelength range is usually 100-400mn. But the wavelength range that is sufficient to charge a battery between the Red-violet wavelength range is about 380- 759mn.

Tips to Charge Your Solar Lights Efficiently

You had better choose to use the solar lights when there is less sunlight might cause the battery to drain. When the battery is drained frequently, it reduces the lifespan of your solar lights. 

To curb that issue, we will give you three tips you can use to charge your solar lights efficiently.

  1. Keep the 540W Solar Panel Clean

To make sure that the sun reaches the photovoltaic cells in a solar panel, clean the panel regularly. Debris and dust are the most common things that block the solar panel. 

  • A clean solar panel ensures the sensor is exposed. If the sensor is blocked by dirt, the bulb will stay on even during the day. This drains the battery and makes it last for a few hours at night. 
  • Use a microfiber cloth dipped in clean water. Or use a liquid that cannot cause streaking. Avoid detergents at all costs.

2. Direct the solar panel toward the sun

Solar lights battery charges when directed towards the sun. 

  • If there is insufficient sunlight energy in your region, place large mirrors surrounding the panels at an Angle. This will reflect all the sunlight energy to the panel when the sun is at any position.

The mirrors should be a bit larger than the panel to direct more sunlight.

  • Sometimes shadows and trees block the sun from reaching the solar panel. In that case, transfer the solar panel to open space. 

3. Switch off the solar lights for 72 hours for complete charging. 

When the sun is not enough, the battery will not charge fully. When the sun detects darkness at night, despite the battery not being fully charged, the bulbs will light up. 

To prevent the battery from being damaged by frequent drains, switch off the solar lights for 3days until it is fully charged. 


Now, you knwo, the solar lgioht is one of the mosr imropfirtat and high effeciten energy for you to use. At the same time, you can choose to get creative with your charging methods. On the flip side, 
artificial lights can charge the solar light but are slightly slow. It will take more than 10hrs before the battery is fully charged. 

In addition, Power is another way you can charge your solar lights. However, for the most solar batteries accompany a connector that can be associated straightforwardly to the power source. You ought to, nonetheless, utilize this technique just when there is a crisis. Assuming that the daylight is back following a couple of overcast days, guarantee you charge your battery for three days prior to utilizing them.

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