What Affect Solar System Street Light Lifespan?

Solar system street lights play a very important role in our lives and bring great convenience to our lives. Especially in remote and off-grid areas, power outages often occur or even there is no electricity. When people come to invest in solar system street light, they will often ask how long the solar system street light can last? Lifespan if always concerned by most people. Of course, users want a lighting solution with longer service life. Well maintenance is necessary to make the solar lights last longer, and the premise is to know the factors that affect the service life of the solar system street lights.

1. Lighting source

Different types of light sources have different service life. Commonly used light sources for solar system street lights in the market are high-pressure sodium lamps, induction lamps, energy-saving lamps, LED light sources, and so on. EXC solar system street lights use high-quality LED light sources. As the fourth-generation lighting source, LED has the characteristics of energy saving, environmental protection and long life. There are also many solar system street light manufacturers in the market insisting on using other light sources, such as low-pressure sodium lamps. These light sources are cheap, but their service life is relatively short and the quality is relatively poor. As far as the matching of solar power supply is concerned, LED is a low-voltage power supply, which is easy to match with the power supply of solar power. Other types of light sources require a larger boost range, high power conversion loss, and large electromagnetic interference. The service life of better quality LED light sources can reach more than 10 years.

2. Light source starter

Different light sources have different starting methods and require different ballasts or driving power lamps. This part has a great influence on the light source, especially the LED light source. Now it is generally driven by a constant current source. The quality of the constant current source and whether the setting parameter range is suitable for the light source is very important. Mainly look at: constant current accuracy, output efficiency, protection circuit, parameter setting range, etc.

3. Battery

Batteries are the core of solar system street lights, and their main function is to store electrical energy. Therefore, choose a battery with relatively stable performance. In addition, the construction should be tight to prevent water from entering the battery. At present, there are 4 types of batteries commonly used in road solar lights on the market, lead-acid batteries, gel batteries, ternary lithium batteries, and lithium iron phosphate batteries. Lead-acid batteries generally have a relatively low service life within 5 years, and generally need to be replaced after 3 years. The lithium iron phosphate battery, as a product that has replaced lead-acid gel batteries in the past ten years, has a longer service life, generally around 8 years.

4. Solar Panel

Its main function is photoelectric conversion, and its service life is also very long. Solar panels are generally made of monocrystalline silicon and polycrystalline silicon. Monocrystalline silicon has a much higher light conversion efficiency than polycrystalline silicon. Now the overall technology of solar system street lights has been improved, and the normal life of solar panels is about 25 years. Moreover, the solar panels can't be shielded. If the solar modules are partially covered or damaged, the photoelectric conversion efficiency of the solar modules will be greatly affected. If only 10% of solar panels are covered, the power generation efficiency of solar modules will drop by 50%. The operating current of the system will not reach the rated operating current, and the battery is often in a state of power loss, which will affect the service life of the battery and the entire solar street light system.

5. Solar Controller

The service life of the solar system street light controller is generally 15-20 years. It can effectively control the working state of the battery and indirectly protect the solar system street light, providing a relatively stable working environment for the street light, especially when the battery power is insufficient. . A controller with high precision and stable performance will play a key role.