Comparing Affordable Solar Panels: A Detailed Review
In this article, we will review different types of inexpensive solar panels, including their features and performance. We will focus on three types of panels: glass panels, flexible panels, and an alternative panel, and provide insights into their applications for charging car batteries, motorcycle batteries, ATVs, and garden tractors.
Types of Solar Panels
Glass Solar Panels
These panels are labeled as fragile due to their glass construction. They are not flexible but are used for various battery charging applications.
Flexible Solar Panels
Flexible panels offer some degree of flexibility but are not bendable. They are suitable for charging car batteries, motorcycle batteries, ATVs, and garden tractors.
Initial Observations
Unboxing and Inspection
Upon receiving the panels, it’s essential to inspect them for any damage. Here’s a brief overview of the three panels we examined:
- Panel 1: Labeled “New Powwow,” branded as “Solar Land.”
- Panel 2: Labeled as “Flexible Solar Panel,” made in China.
- Panel 3: An alternative panel from eBay.
Panel Specifications
All three panels are rated at 20 watts. However, their actual performance may vary.
Installation and Testing
Preparation
Before installing, ensure to cover any personal information on the panels. Use a knife carefully to open the packaging, as glass panels can be easily damaged.
Soldering Diodes
Most panels come without diodes or wiring. To ensure proper functioning, solder a Schottky diode to each panel. The positive side of the diode connects to the incoming side of the panel, while the outgoing side connects to the charge controller.
Performance Testing
Testing Setup
We tested each panel using a riding lawnmower’s 40 amp battery. The battery’s initial voltage was 12.4 volts. We used an 8 amp charge controller to measure the panels’ performance.
Results
Solar Land
- Output: Approximately 0.84 amps
- Performance: This panel performed the best, delivering nearly an amp of current.
Flexible Solar Panel
- Output: Approximately 0.46 amps
- Performance: This panel delivered about half an amp, indicating it is less efficient than Solar Land.
Alternative Panel
- Output: Approximately 0.64 amps
- Performance: This panel performed moderately, delivering around two-thirds of an amp.
Conclusion
Best Performer
The Solar Land panel outperformed the other panels, making it the best choice for those looking for reliable performance.
Cost Efficiency
The flexible solar panel, despite its lower performance, is still a viable option for budget-conscious buyers.
Additional Features
The alternative panel offers a USB port for charging cell phones, making it a convenient option for outdoor activities.
Recommendations
- Solar Land Panel: Best overall performance, suitable for critical applications.
- Flexible Solar Panel: Budget-friendly, suitable for less demanding tasks.
- Alternative Panel: Offers additional USB charging functionality.
Future Applications
We will explore how to integrate these panels into awning covers for enhanced outdoor energy solutions. Stay tuned for more updates!
For more information and to purchase these panels, check the links provided below the video.
By following these steps, you can choose the right solar panel for your needs and ensure proper installation for optimal performance.
