How Many Years Does A Solar Street Light Normally Last?

After the batteries have been replaced by lithium batteries, the life of the solar street light has been greatly improved, and the life of a reliable solar street light can reach about 10 years. 10 years later, only some parts need to be replaced, and the solar light can continue to serve for another 10 years.

The following is the life span of the main components of the solar street light (we default to the premise that the quality of the product is excellent and the use of the environment is not harsh)

1. Solar panels: more than 30 years (after 30 years the solar energy decays by more than 30%, but it can still generate electricity, it does not mean the end of life)

2. Street light pole: more than 30 years

3. LED light source: more than 11 years (according to the calculation of 12 hours of work per night)

4. Lithium battery: more than 10 years (depth of discharge calculated according to 30%)

5. Controller: 8-10 years

It can be seen that the shortcomings of the whole set of solar street lights have been transferred from the batteries of the lead-acid battery era to the controller. 

A reliable controller has a life expectancy of 8-10 years, which means that a reliable set of solar street lights should have a life expectancy of 8-10 years or more. In other words, the maintenance cycle of a set of reliable solar street lights should be 8-10 years.