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Solar street lights equipped with high-quality batteries and controllers offer superior protection for the battery, significantly extending its lifespan—often by two to three times compared to standard batteries. This enhanced durability ensures long-term cost savings and reliable performance.
The self-discharge rate of colloidal lead-acid batteries has been greatly improved. Under identical conditions, such as the purity of sulfuric acid and water quality, these batteries can store energy for more than twice as long as traditional models. This makes them ideal for applications where consistent power is essential, even in low-light or remote areas.
In cases of severe power shortages, colloidal lead-acid batteries demonstrate better resistance to sulfation than conventional batteries. This means they are less likely to suffer from irreversible damage due to deep discharges, maintaining their efficiency over time.
Additionally, colloidal lead-acid batteries have strong recovery capabilities after being deeply discharged. Unlike regular batteries that may lose capacity permanently, these batteries can often regain most of their performance, making them more resilient in challenging environments.
They also exhibit excellent resistance to overcharging. In a comparative test, when both a colloidal lead-acid battery and a valve-regulated sealed lead-acid battery were subjected to repeated overcharging, the colloidal version retained its capacity much better. The sealed battery, on the Other hand, suffered a significant drop due to excessive water loss, highlighting the superior stability of colloidal technology.
The post-discharge performance of colloidal lead-acid batteries has also seen major improvements. This means they can maintain stable output even after being fully discharged, ensuring consistent lighting performance throughout the night.
To ensure optimal performance, it's crucial that all components in a solar street light system are of high quality. For example, high-efficiency polycrystalline solar panels ranging from 30W to 400W provide reliable energy capture. Energy storage comes from maintenance-free lead-acid or colloidal sealed batteries with a capacity of 80AH. A 12V-10A solar charge controller manages the charging process effectively, while high-power LED lights (ranging from 20W to 180W) deliver bright, energy-efficient illumination.
The light pole is typically made of Q235 steel, 7 meters tall, and treated with hot-dip galvanization and spray coating for long-lasting durability. The solar controller uses microcomputer-based intelligent control, offering features like anti-overcharge, anti-overdischarge, moisture resistance, and short-circuit protection. It also supports automatic operation based on light detection and time settings.
When all components are of high quality and properly matched, the system can provide 8 to 12 hours of daily lighting, even during 5 consecutive rainy days. With proper maintenance, the entire system can last for 5 years or more, making it a cost-effective and sustainable lighting solution.