What is the approximate lifespan of traditional photovoltaic series lights?

The lifespan of traditional photovoltaic series lights varies depending on the type of product, component quality, usage environment, and maintenance. The following is a detailed analysis:

Solar street lights: The overall lifespan is usually between 5 to 15 years. Among the core components, solar panels can last 15 to 25 years (monocrystalline silicon is superior), LED light sources last over 50,000 hours (about 10 years or more), but batteries have a shorter lifespan, with lithium batteries lasting 3 to 8 years and lead-acid batteries only 2 to 3 years. The controller lasts about 5 to 10 years, and lamp posts made of hot-dip galvanized steel can last over 15 years.

Solar garden lights: The overall lifespan is 5 to 15 years, with high-end models (such as lithium iron phosphate batteries and monocrystalline silicon panels) lasting 10 to 15 years. LED light sources last about 8 to 15 years, solar panels last 15 to 25 years, battery life ranges from 2 to 8 years (longest with lithium iron phosphate batteries), controllers last 5 to 10 years, and lamp structures last 10 to 20 years.

Solar lawn lights: LED light sources last 50,000 to 100,000 hours (about 10 to 27 years), lithium batteries last 8 to 10 years, and solar panels last 25 to 30 years. The overall lifespan is limited by the battery, but use can be extended by regular battery replacement.

Solar landscape lights: The overall lifespan is about 10 years or more. The energy system (solar panels and lithium iron phosphate batteries) can provide power for five consecutive rainy days. LED light sources last over 50,000 hours, and lamp posts have a corrosion-resistant lifespan of over 15 years.