Nowadays, many people are familiar with solar street lights, as they are installed on city roads, new rural roads, and even at home. Everyone knows that they are powered by solar energy and do not incur electricity costs. So, how long can solar street lights generally last? To address this question, the following detailed information is provided.
After switching to lithium batteries, the lifespan of solar street lights has significantly increased. Reliable solar street lights can last about 10 years. After 10 years, only some components need to be replaced, and the solar lights can continue to serve for another 10 years.
The following is the lifespan of the main components of solar street lights (assuming product quality is high and the usage environment is not severe).
1. Solar panel: Over 30 years (after 30 years, solar efficiency may decrease by more than 30%, but it can still generate electricity, which does not mean the end of its lifespan).
2. Lamp pole: Over 30 years.
3. LED light source: Over 11 years (based on 12 hours of operation each night).
4. Lithium battery: Over 10 years (based on 30% depth of discharge).
5. Controller: 8-10 years.
The information shared about the lifespan of solar street lights indicates that the weaknesses of the entire solar street light system have shifted from lead-acid batteries to controllers. A reliable controller can last 8-10 years, meaning a quality solar street light system should have a lifespan of 8-10 years. In other words, the maintenance cycle for a quality solar street light system should also be 8-10 years.
