The power supply time of UPS uninterrupted power supply is not infinite, and this time is influenced by factors such as the size of the battery's stored energy, load size, environmental temperature, and battery discharge cut-off voltage. Generally speaking, the UPS uninterrupted power supply for small household computers can last for about 20 minutes. Large dry-watt grade UPS can be equipped with a battery pack according to requirements, with a power supply time of more than 1 hour, and some can even supply power for 10 hours. How long the UPS uninterrupted power supply can last depends on the actual situation. Generally, UPS uninterruptible power supply manufacturers will increase the power and emergency time based on consumer requirements, This not only ensures that negative numbers can start safely and smoothly, but also ensures more backup time. If there is an AC power outage, during the valuable time of UPS battery power supply, what users need to do is to quickly restore AC power, such as enabling backup AC power circuit and oil engine power generation. If this is not feasible, they can only save the data urgently, save the labor results, and wait for AC power to return to normal before continuing.