The Lifespan Of Solar Street Lights

As a LED application product using renewable energy,solar street light has the characteristics of zero emissions and no pollution, which is in line with the global demand for energy conservation and emission reduction.Therefore, many countries and regions regard solar street lights as a nice choice for outdoor lighting.

But with the widespread use of solar powered street lights, we have gradually found that some solar street lights can still lighting normally after 3 or 5 years of use, but some solar street lights can not lighting normally after one or two years of use, which makes us doubt about the lifespan of solar powered street lights.Here, we will take you to scientifically analyse the related problems of the service life of solar street lights.

I How long do solar street lights Last?

We will analyze the service life of solar street lights from 5 aspects below:

1. Solar panel

Solar panels are the generating equipment of whole system.It is made of silicon wafers and has a long lifespan of about 20 years.

2. LED light source

LED light source is composed of at least dozens of light beads containing LED chip, the theoretical life can reach up to 50000 hours.

3. Street light light pole

Street light pole is made of Q235 steel, the whole hot-dip galvanized treatment, hot-dip galvanized rust prevention and corrosion ability is strong, so at least it can guarantee no rust about 14 or 15 years.

4. Storage battery

At present in China, the main storage battery using by solar street lights is colloid maintenance-free battery and lithium battery.Colloidal batteries have a normal service life of about 5-8 years, and lithium batteries have a normal service life of about 3-5 years.In normal use, the storage battery need to be replaced after 3-5 years, because the actual capacity of storage battery after 3-5 years of use is much lower than the initial capacity, affecting the lighting effect.The cost of replacing storage battery is not too high, just buy from the solar street light manufacturer.

5. Controller

Generally,the controller with higher waterproof sealing grade can normally use for about 5 years.

II Why do my solar lights not last long?

Some lighting of solar light can not last long, generally what is the cause of such a problem?Here, solar street light factory will tell you what causes the short time of solar street light.Below are the main 4 causes summarized by We expert:

1. Too long cloudy and rainy days

When the solar street light work under the weather of cloudy and rainy days, due to the weak light ray, the solar cell module can not be converted or the conversion is low, resulting the charging is less than discharge, so that the power of storage battery is low for a long time, resulting in short lighting time.

2. The decreases of storage battery capacity

The decline of battery storage is the first factor to be considered when the night lighting time of solar street lights becomes shorter.Solar street light energy supply and storage are completed by the battery, the battery has a certain life.Now commonly used storage battery of solar street lights are colloidal lead-acid batteries and lithium batteries.The service life of colloidal lead-acid battery is generally 3-5 years, and the service life of lithium battery is 5-8 or more than 8 years.If the lifespan of solar lights reach to the deadline, it can basically consider replacing the battery.

3. Solar photovoltaic panels are dirty or damaged

The main role of solar photovoltaic panels is to convert light into electricity.Solar cells exposed to the outside for a long term, especially in dusty places, tend to accumulate dust. Weessive accumulation of dust will lead to the decline in conversion efficiency, also cause lower charging capacity than discharge capacity, so as to shorten lighting time.In this case, it is necessary to clean the photovoltaic panel and recharge it with electricity for two days to restore the original lighting time.If the lighting time is still short after cleaning, it indicates that the solar photovoltaic panel may be damaged and needs to be replaced with a new photovoltaic panel.

III How to extend the life of a solar street light?

Overall, the key affecting service life of solar street light lies in the storage battery.When purchasing solar street lights, you can choose to configure larger storage batteries.If the capacity of storage battery is only enough for daily discharge, it will be easily damaged.But if the capacity of storage battery is several times the amount of electricity discharged every day, which means that only a few days can there be a cycle, which greatly increases battery life, and can also ensure the longer lighting hours under the weather of continuous cloudy and rainy days.

The service life of solar street light also depends on the necessary maintenance at ordinary times.In the early stage of installation, we should strictly follow the construction standards to install, and try to make reasonable collocation in the configuration, increase the capacity of storage battery, so as to extend the lifespan of solar powered street lights.

Summary:The lifespan of solar street light is mainly determined by the solar panel, storage battery and LED light source of the solar light.After all, these parts are working all day, and electricity is flowing through them.The normal life of solar panels can reach about 25 years.The battery has a decline period, the normal service life is in 5-8 years.If the quality of LED light source is qualified, the installation and wiring is correct, there is no problem to service for 10 years.The solar street light storage battery can be replaced when the lifespan reached,and the replace cost is low.

As shown in the picture, Zenith Lighting is a Professional manufacturer of all kinds of street lights, if you have any inquiry or project, please do not hesitate to contact with us.