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1. Decline in Battery Storage
The decline in battery storage capacity is primarily a factor affecting the solar street lights. The energy supply and storage for solar street lights rely on batteries, which have a finite lifespan. Commonly used batteries in solar street lights include gel lead-acid batteries and lithium batteries. Gel lead-acid batteries typically last between 3 to 5 years, while lithium batteries can last 5 to 8 years or even longer. If solar street lights reach the end of their battery lifespan, it is advisable to consider replacing the batteries. Currently, manufacturers like Daineng Lighting primarily use lithium batteries instead of gel lead-acid batteries.
2. Extended Rainy Weather
During prolonged rainy days, solar street lights receive weaker light, causing the solar panels to convert less energy. This results in insufficient charging, leading to battery capacity depletion and shorter illumination time at night. However, after favorable weather conditions return, a couple of days of charging can restore the normal illumination time.
3. Dirty or Damaged Solar Panels
The primary function of solar panels is to convert light into electrical energy. Over time, especially in dusty environments, dust accumulates on the panels, decreasing conversion efficiency. This can lead to a situation where charging is less than discharging, thus shortening illumination time. Regular cleaning of the solar panels is needed; typically, after cleaning, charging for two days can restore the original illumination time. If the illumination time remains short even after cleaning, it may indicate that the solar panels are damaged and need replacement.
The three reasons mentioned above are common causes for the decreased nighttime illumination duration of solar street lights, with battery issues being the most likely culprit.
For more information about solar street light pricing, feel free to inquire with street light manufacturers.
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