BATTERIES
The battery discharges the continuous current stored in it to be converted into AC current by means of an inverter to provide long-term power to keep all your devices ready to work.

In the event of a power outage, the power source in this case is the batteries,Where the batteries discharge the direct current stored in them to be converted into AC current by means of an inverter to provide long-term power to keep all your devices ready to work.
The period during which the conversion from the main power to the backup power (batteries) takes place is less than 50 milliseconds , Which is considered sufficient for many devices such as computers