LED Solar Wall Lights

How LED Solar Wall Lights Work

Solar wall lights are practical when the fixture can receive direct sun during the day and store enough battery capacity for the required nighttime runtime. LED solar wall lights utilize LED lighting and solar power to light up your outdoor space. They are entirely off-grid and rely on the photovoltaic process where the solar cell converts sunlight into usable electrical energy. During this process, sunlight creates electrical current inside the PV cells.

The electrons are then converted into electricity which goes through the wires connecting the solar panels to a battery where it is stored until it is needed.

Components of LED Solar Wall Lights

This system is composed of a solar panel, batteries and LED light fixtures. The panel is a flat surface made of silicon chips called PV (or photovoltaic) cells. The cells are stacked in layers on the panel, backed by a piece of metal. When sunlight hits the panel, the process described above is triggered. However, the solar panel does not connect directly to the LED lights.

It passes the electrical energy to the batteries for storage first. In the battery, it is converted and stored as chemical energy and then changed back to an electrical output when the lights are switched on. This solar lighting system also has a photoresistor. During daylight hours, the solar panel charges the battery but the photoresistor stops the lights from coming on. At night, the photoresistor detects little or no light. It activates the battery and the circuit is complete for the lights to come on. The battery supplies the necessary power throughout the night until the sun rises or the electrical charge runs out.

Designing LED Solar Wall Lights

Poor solar-wall-light planning can shorten battery life, leave dark spots, or put light where it creates glare. Start with sun exposure, fixture output, battery reserve, mounting height, and the surface that actually needs light. A layout review can also compare foot-candle or lux targets when the project needs a more formal check before ordering.

Solar Panel Wattage

Solar insolation, commonly known as sun hours, determines the amount of solar energy available in a given area. A location receiving 5 sun hours per day needs a smaller solar panel than one receiving only 3 sun hours. The panel wattage must produce enough energy during daylight to fully charge the battery for overnight operation. For most solar wall lights, panels range from 2W to 10W depending on the LED wattage and desired run time.

Benefits of LED Solar Wall Lights

• Health and Safety — Solar powered lighting eliminates the dangers inherent in laying electricity cables outside. LED solar wall lights also provide a constant source of illumination during darkness, acting as a deterrent to vandalism and burglary.
• Cost Effectiveness — Solar wall lights can be cost-effective where trenching or adding electrical service would be expensive. With no utility bills or wiring needed, you save significantly over the system's lifespan.

LED solar wall lights are a practical alternative to wired fixtures when the wall, panel location, and nightly runtime requirements fit the site.