Contextual help of the web interface – 66
Settings #2
3.5.4.1.2 On low battery warning
In some cases, like a renewed power failure or failed battery, the capacity is much lower than anticipated. The UPS gives a Low
battery warning when there is 2 - 3 minutes of estimated runtime left, depending on the UPS and its settings. This time is typically
enough for shutting down a server but does not allow sophisticated sequential shutdown schemes.
The Low battery policy is intended for these cases.