Determination of battery discharge time
After the power failure, the UPS relies on battery energy storage to supply power to the load. The standard UPS has its own battery in the machine, which can generally continue to supply power for a few minutes to dozens of minutes after the power failure; The long-term UPS is equipped with an external battery pack, which can meet the needs of users to continue to supply power when the power is cut off for a long time, and the general full-load configuration time of the long-term UPS can reach more than a few hours.
The standby time of general long-acting UPS is mainly limited by factors such as battery cost, installation space and battery recharge time. Generally, UPS and generators are used to supply power in areas with poor power environment and frequent power outages. When a power failure occurs, the UPS is powered by batteries for a period of time. If the power failure lasts for a long time, you can start the backup generator to continue supplying power to the UPS and switch to the mains when the mains recovers.

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Battery power supply is mainly affected by load size, battery capacity, ambient temperature, battery discharge cut-off voltage and other factors. General computer UPS battery power supply time, you can first calculate the battery discharge current, and then according to the battery discharge curve to investigate the discharge time. To calculate the battery discharge current, use the following formula: Discharge current =UPS capacity (VA) x power factor/(Average battery discharge voltage x efficiency) To calculate the battery discharge time under the actual load, you only need to change the UPS capacity to the actual load capacity.