Warning lights series come in two DC and AC versions. They are designed to ensure road safety in areas at risk of accidents or when road construction in progress. The power of the solar cell LED warning lights advantage is the lithium battery inside, its energy conversion is up to 97% and has a stable discharge voltage of about 3.2 V DC. While many manufacturers used acid-lead batteries, which is about 75% energy conversion and a drop of obvious download for downloading. it may take about six days of continuous work in the rainy and cloudy days when the battery is fully charged. on the other hand, our solar blinkers are able to automatically dim at night to save energy.