Lenovo RT1.5kVA Installation And User Manual page 46

Note: (*) High Efficiency mode introduces a delay between loss of input power
and switching to battery power.
30
Installation and User's Guide
Table 2. Operating modes (continued)
Mode
Power failure
Power sag
Power surge
Under voltage
Over voltage
Online Battery
yes n/a
yes n/a
yes n/a
yes n/a
yes n/a
High
Standby Efficiency*
no yes
no yes
no yes
no yes
no yes