Backup Time is the duration for which the UPS runs after the power fails. Backup Time depends on the capacity of the battery and the usage of UPS (based on number of devices connected) in Battery Mode.
The thumb rule of Battery Backup is lesser the usage, more the battery back up.
TIP : Generally when installed at homes, you don’t have to opt for higher capacity batteries because you reduce the number of lights & fans as soon as power fails hence increasing the backup time .
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