What are the shortcomings of traditional ups power supply system?

Advantages of backup UPS power supply:

The product price is low and the operation cost is low. Under normal circumstances, the inverter is in a non-working state, and the power of the grid is directly supplied to the load, so the power conversion efficiency of the backup UPS is very high. The service life of storage battery is generally 3~5 years.

Disadvantages of backup UPS power supply:

When the grid power supply fails, it takes a long time to switch from grid power supply to inverter power supply. For those devices that require high power quality, the length of this conversion time is very important. Furthermore, because the inverter of backup UPS power supply does not work often, it is difficult to grasp the dynamic state of the inverter and it is easy to form hidden faults. Backup UPS power supply is generally used in some non-critical low-power equipment.