This system is used unlike the systems of air coolers or air conditioners that
use electricity. The solar air cooler is powered by the energy produced directly
from the solar panels or the battery. On a sunny day, the solar panel produces
a continuous current used by the air cooler directly. A backup battery is charged
by the solar panels. Use during nights or days of low sunlight.

The advantage of using solar coolers is that they are economical because they
completely eliminate AC power consumption.