How Long Is The Lifespan of Solar Power Street Light?

With the advancement of technology, solar energy has been applied to various fields. Now the very popular solar products in the outdoor lighting market are solar street lights. We know that solar power street lights are composed of solar panels, solar controllers, battery packs, light sources, light poles and lamp housings. Solar power street lights do not need to be connected to the power grid. During the day, solar energy resources are converted into electrical energy through solar panels and stored in batteries. At night, the batteries will supply power to the street lights and illuminate the streets.

Factors affecting the service life of solar street lights

1. Lighting source

Different light sources have different lifespans. The light sources that can be selected include low-pressure sodium lamps, low-pressure induction lamps, LED lamps, and low-pressure fluorescent lamps. Now more sodium lamps and LED lamps are used. Sodium lamps are cheap with short lifespan. LED lights are now of good quality at 50,000 hours, theoretically 10 hours a day, and can be used for more than 10 years. So first choose a good LED light source. Of course, the LED light source is naturally more expensive than the general light source, the light decay is small, and the luminous efficiency is also high. Saving energy can reduce the configuration of solar power street lamps and reduce costs.

2. Smart Controller

The function of the solar controller is to control the solar panel to charge the battery, and to supply the solar street light for lighting. While effectively controlling the working state of the battery, it also indirectly protects the load (solar street light), providing it with an effective and relatively stable working environment. A solar power street light with a long service life should have a good solar controller. Since the street light is installed for outdoor use, it can prevent rain erosion and protect the street light. A controller with high precision and stable performance will play a key role in protecting solar power street lamp.

3. Solar panels

If the solar module is partially covered or damaged, the working efficiency of the solar module will be greatly affected. If only 10% of the solar panel is covered, the power generation efficiency of the solar module will drop by 50%. The working current of the system will not reach the rated working current, and the battery is often in a state of power loss, which has a huge impact on the life of the battery. At the same time, it will also affect the service life of solar power street lights.

4. Battery

The core of the solar power street light is the battery. The quality of the battery directly affects the service life of the solar street light. Generally, for the sake of safety and reliability, it is necessary to choose a battery of good quality, which is more stable. Therefore, in terms of price, it will be higher than ordinary manufacturer batteries, and you get what you pay for, and batteries with high prices can last a long time.

Among these components, the service life of lithium batteries is about 5 years, after which the performance will decline. The service life of the LED light source is about 50,000 hours, about 10 years. The lifespan of solar panels is more than 20 years, as long as they are not damaged by humans, they are not easy to be damaged. After 20 years, the solar panel will only have a certain light decay (about 30% or more), but it can continue to be used. The solar controller also has a service life of 8-10 years, and has functions such as overshoot, over discharge and lightning protection. The solar street light pole is made of Q235 steel. The surface of the pole is hot-dip galvanized as a whole, and the hot-dip galvanized anti-rust and anti-corrosion ability is strong, so it is guaranteed that the pole body will not rust for at least 15 years. The lifespan of the solar power street light is determined by the accessories with the shortest life, that is, it is affected by the service life of the battery. In normal use, the first damage is generally the battery. At this time, there is no need to worry, just replace the battery, and the solar street light can be used normally.