Chapter 2  System  Description  3 
2.6   Battery 
The Liebert® GXT4™ utilizes valve-regulated, nonspillable, lead acid batteries. To maintain battery design life, 
operate the UPS in an ambient temperature of 15°C to 25°C (59°F to 77°F). Optional external battery cabinets are 
available to extend battery run times. For run times, see Table 11-5. 
2.7   Dynamic Bypass 
The Liebert GXT4 provides an alternate path for utility power to the connected load in the unlikely event of a UPS 
malfunction. Should the UPS have an overload, overtemperature or any other UPS failure condition, the UPS 
automatically transfers the connected load to bypass. 
  NOTE 
The bypass power path does NOT protect the connected equipment from disturbances in the mains supply. 
Liebert GXT4 UPS 5000VA ~ 10000VA (230V)  User Manual