Issue:
When utility power fails and the Back-UPS provides battery power, the Back-UPS shuts down unexpectedly after 15 minutes
even when there is enough backup time remaining.
Product Line:
All APC Back-UPS products with No-load Shutdown functionality.
Cause / Resolution:
APC Back-UPS products with No-load Shutdown functionality enabled will shut down while operating on battery power when
the attached load is less than 15 watts.
Please refer to the APC Back-UPS user guide for your model and check if the Back-UPS does have No-load Shutdown functionality.
Example:
In case the Back-UPS does have a No-load Shutdown functionality, you can Enable or Disable this functionality.