What Is Online Double Conversion UPS
Online Double Conversion UPS means that no matter whether the Grid voltage is normal or not, the AC voltage used by the load has to go through the inverter circuit, and the inverter is always in the working state. So when the power is cut off, UPS can immediately convert the stored power into AC power to supply power to the load through the inverter, so as to achieve the goal of zero interruption of output voltage.
What Is Offline UPS / Standby / Battery Backup UPS
When the power supply is normal, the battery is in the state of charge. In case of power failure, the inverter works to convert the DC provided by the battery into stable AC and output it to the electrical equipment. Because the inverter doesn't work when the power supply is normal, it only works when the battery is discharged when the power supply is cut off, so this kind of UPS is called Offline UPS / Backup UPS.
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