UPS stands for an Uninterruptible power supply which is a machine that enables the electronic device to run when the main power source is lost. It contains a battery that kicks into supply when it successfully detects the insufficient power supply and helps to protect our hardware against damage. Online UPS charges the battery from AC main supply and then supply to load through the inverter. So even if the mains supply fails, there won’t be any interruption in the power to the output load. Electric devices like computers, office pieces of equipment, medical equipment, industrial machinery and many more are sensitive to insufficient power supply hence the need for online UPS is highly recommended in these situations.