• Answer: It may not turn on at night, including for these reasons:
  Solar panel not receiving enough sunlight during the day—insufficient charge.
  An old or faulty battery that needs replacement.
  Light sensor obstruction/faulty which turns on the light. 

2. How can I tell if my solar light’s battery is the problem?

• Answer: If your solar light burns for fewer hours than usual or doesn't turn on, it's probably due to a malfunctioning battery. Test this by changing the battery to a new one and see if the issue persists.

3. What should I do if my solar light isn’t charging during the day?

• Answer: Keep the solar panel clean and clear of debris, as dirt will block sunlight. Ensure that it is also in a position to receive direct sunlight for most of the day. If the panel is obstructed or shaded, the light won't charge properly.

4. Why does my solar light flicker or turn off intermittently?

• Answer: It may be due to loose connections, faulty batteries, and being in the way of light sensors. Check all the connections and make sure the sensor is not covered or blocked

5. Can weather conditions affect the performance of my solar lights?

• Answer: Yes, cloudy or rainy days can lessen the amount of sunlight your solar lights are able to receive, thus causing poor performance. The weather can also be cold, and this will have an effect on the efficiency of the battery.

6. How do I clean the solar panel on my light?

• Answer: Clean with a soft cloth and warm water; do not use harsh chemicals. Cleaning regularly helps charge the battery at maximum possible efficiency.

7. What if my solar light stays on during the day?

• Answer: If your solar light stays on during a day, then there may be a fault or obstruction within the light sensor. Make sure that the sensor is clean and not covered. If it doesn't still turn off, you may need to replace the sensor

8. Why is my new solar light not working right out of the box?

• Answer: Nearly all new solar lights have a protective tab over the battery to prevent unnecessary discharge. Make sure you remove this tab.
  Additionally, it could be that the light needs to charge fully throughout the day before it will work.

9. Can I replace the battery in my solar light?

Q: Are batteries in solar lights replaceable?

• Answer: Yes, most solar lights have replaceable batteries. Be sure to apply the right kind of rechargeable batteries—normally NiMH or Li-ion—and follow the manufacturer's instructions for replacement.

10. What should I do if my solar light is still not working after troubleshooting?

• Answer : If none of the above steps work, it is probably defective. Contact the manufacturer for warranty support. If the light is out of warranty, you may want to just replace the unit.

For More FAQ go through the link below

https://www.hardollenterprises.com/pages/people-asking-solar-light-related-doubts-faq