How do solar lights work?
The question we normally get from our clients are "why do we need batteries"? The answer is very simple. The Sun only shine during the day but we need our lights to work at night. For that, we must have something to collect the Sun's energy during the day to be used at night. And this "something" can be non other than a battery.
Solar powered lightings consist of a solar panel, controller, photo-resistor, battery and a light source (typically LEDs). During day time, the sun rays are converted into electrical energy by the solar panel. The electrical energy are then stored temporarily in the batteries for later use. The controller meanwhile, acts as a regulator to stop the charging process when the battery is fully charged to avoid damage to it as well as to allow the flow of electricity to switch on the LEDs when the photo-resistor detects no light.