Emerson GXT2U Manuel D’Utilisation

Battery mode occurs in event 

of an extreme input voltage 

condition or complete utility 

failure. The battery system 

supplies power through the DC 

to DC converter to the inverter 

to generate power for the 

connected load.
During battery mode an alarm 

sounds every 10 seconds. This 

will change to two beeps every 

5 seconds when the battery runs low (approximately 2 minutes remaining, but 

this is user configurable). The AC Input LED will extinguish, and the Battery 

LED will illuminate to warn that a utility problem has occurred. Each battery 

level indicator represents a 20% capacity level. As capacity decreases, fewer 

indicators remain illuminated. Refer to Troubleshooting section.
For approximate battery run times, refer to the Battery Run Times charts in 

this manual. These times are approximates based on resistive load and an 

ambient temperature of 77°F (25°C). To increase this time, turn off non-

essential pieces of equipment (such as idle computers and monitors) or add the 

optional external battery cabinet.

Once utility power is restored, the UPS resumes normal operation. At this 

time, the Battery Charger begins recharging.

Turning OFF the UPS while in battery mode will result in loss of 

output power.