How Do Manufacturers Ensure the Quality of Solar Street Lights?
Discover how reliable manufacturers ensure top-quality solar street lights through advanced materials, strict testing, and international certifications like ISO, CE, and UL.
Solar street lights are long-term infrastructure investments. Whether installed in remote villages, smart cities, or commercial zones, their performance and durability are critical. But how do reputable manufacturers guarantee consistent quality?
1. Rigorous Component Selection
Reliable manufacturers source high-grade components:
- Solar panels: High-efficiency monocrystalline or polycrystalline panels with ≥20% conversion rate
- LED chips: Brand-name (e.g., Bridgelux, Osram) offering 130–200 lm/W
- Battery: LiFePO₄ or ternary lithium with ≥2000 cycles
- Controller: Intelligent MPPT controller with real-time monitoring
- Housing: Die-cast aluminum, IP65–IP67 waterproof and rustproof
2. Comprehensive Quality Control Systems
| Stage | Testing Activities |
|---|---|
| Incoming Inspection | Raw materials, solar panels, LEDs, batteries |
| In-process QC | Circuit assembly, soldering checks, welding tests |
| Aging Tests | 24–72 hour continuous lighting to detect defects |
| Vibration Tests | Simulates shipping and handling impact |
| Waterproof Tests | IP65/IP66 spray or immersion simulations |
| Final Inspection | Visual, functional, and safety checks |
3. Certified Manufacturing Standards
Leading manufacturers comply with global standards:
- ISO 9001 – Quality Management System
- ISO 14001 – Environmental Management
- ISO 45001 / OHSAS 18001 – Health and Safety
- CE, UL, BIS, CB – Safety and market certifications
- RoHS, MSDS – Environmental and battery safety compliance
4. Professional R&D and Engineering
Design innovation is critical for performance:
- Photometric simulations (e.g., Dialux)
- Protection circuits for overcurrent, overvoltage, overheating
- Remote dimming, smart control, auto-adjust lighting
5. Reliable Packaging and Logistics
Products are secured with:
- Foam or honeycomb carton inserts
- Anti-static and moisture-proof packaging
- Drop tests and pallet shipping with protection
6. After-Sales Support and Warranty
Trustworthy manufacturers offer:
- 3–5 year warranties (up to 10 years for premium models)
- Installation guides and wiring diagrams
- Remote diagnostics and parts replacement
- Customer feedback tracking for product improvements
Summary Table
| Key Element | What to Look For |
|---|---|
| Solar Panel | ≥18V, mono, ≥20% efficiency |
| Battery | LiFePO₄ or Lithium-ion, >2000 cycles |
| LED Brightness | 130–200 lm/W, branded chips |
| Certification | CE, UL, ISO, TUV, RoHS |
| Housing & Protection | Aluminum, IP65+, corrosion resistant |
| Smart Features | PIR, MPPT controller, remote |
💬 Frequently Asked Questions (FAQ)
A: 10–15 years. Batteries typically need replacement every 5–8 years.
A: No. Choose ISO-certified suppliers with test reports and brand components.
A: Yes. Third-party inspection (SGS, BV), factory audits, and video checks are available.
A: Poor batteries and unbranded LED chips.
A: Absolutely. They reduce maintenance and enhance lighting reliability.
📞 Work With a Trusted Manufacturer
GuangDong Queneng Lighting Technology Co., Ltd.
Founded in 2013, we specialize in solar street lights, solar panels, batteries, lighting design, and project solutions. Our products are ISO9001, TUV, CE, and UL certified.
👉 Contact us today for custom solutions, samples, or a factory quote!
Have more questions about our products or services?
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FAQ
Battery Performance and Testing
What is a vibration experiment?
After the battery is discharged to 1.0V at 0.2C, charge it at 0.1C for 16 hours. After leaving it aside for 24 hours, it vibrates according to the following conditions:
Amplitude: 0.8mm
Make the battery vibrate between 10HZ-55HZ, increasing or decreasing at a vibration rate of 1HZ every minute.
The battery voltage change should be within ±0.02V, and the internal resistance change should be within ±5mΩ. (Vibration time is 90min)
The lithium battery vibration experiment method is:
After the battery is discharged to 3.0V at 0.2C, charge it to 4.2V with 1C constant current and constant voltage, with a cut-off current of 10mA. After leaving it aside for 24 hours, it vibrates according to the following conditions:
The vibration experiment was carried out with the vibration frequency from 10 Hz to 60 Hz and then to 10 Hz within 5 minutes as a cycle with an amplitude of 0.06 inches. The battery vibrates in three axes, each axis vibrating for half an hour.
The battery voltage change should be within ±0.02V, and the internal resistance change should be within ±5mΩ.
What is the IEC standard cycle life test?
After the battery is discharged to 1.0V/support at 0.2C
1. Charge at 0.1C for 16 hours, then discharge at 0.2C for 2 hours and 30 minutes (one cycle)
2. Charge at 0.25C for 3 hours and 10 minutes, discharge at 0.25C for 2 hours and 20 minutes (2-48 cycles)
3. Charge at 0.25C for 3 hours and 10 minutes, then discharge to 1.0V at 0.25C (49th cycle)
4. Charge at 0.1C for 16 hours, leave for 1 hour, discharge at 0.2C to 1.0V (50th cycle). For nickel-metal hydride batteries, after repeating 1-4 for a total of 400 cycles, the 0.2C discharge time should be greater than 3 hours; for nickel-cadmium batteries, repeating 1-4 for a total of 500 cycles, the 0.2C discharge time should be greater than 3 hours.
Battery and Analysis
What certifications have the company's products passed?
OEM&ODM
What is the lead time for OEM production?
15–25 working days depending on order volume and customization level.
Public Gardens and Landscape Lighting
Can solar lights be customized for specific landscaping needs?
Yes, we offer customizable solar lighting solutions to meet the unique needs of different landscaping projects. From adjusting the brightness to selecting the appropriate lighting style and design, we can tailor our products to fit your vision.
Remote Areas Rural Development
Can the system operate in areas with limited sunlight?
Yes, advanced batteries store sufficient energy to function during cloudy days or extended low-sunlight periods.
Queneng's Luqiu Innovative Solar Street Light offers energy-saving, durable outdoor lighting. This solar power street light provides a reliable and eco-friendly solution for illuminating your streets and pathways.
If you would like more information about Queneng solar lighting solutions, please send us a message by filling out the form below. Our professional team will get back to you within 24 hours!
Rest assured that your privacy is important to us, and all information provided will be handled with the utmost confidentiality.
Schedule a Meeting
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The messenger of light & power conversion
Environmental protection and intelligent manufacturing are our brand philosophy, and quality assurance and the best user experience are our eternal promises to users.
CONTACT
No.9F, Building F, Cao San Xin Tian Hong Logistics Park, Guzhen Town, Zhongshan City, Guangdong Province, China.
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WhatsApp: +86 136 2270 1011
