Liebert GXTTM - Manual (Page 17)

15
MAINTENANCE
The UPStation GXT UPS requires very little maintenance. The batteries are
valve regulated, non-spillable, lead acid, and should be kept charged to obtain
their designed life. The UPS continuously charges the batteries when connected
to the mains supply.
When storing the UPS for any length of time, it is recommended to apply power
to the UPS for at least 24 hours every four to six months to ensure full recharge
of the batteries. In no case should the unit be stored in excess of nine months
without recharge. Periodically, examine the vents on the front and rear of the
cabinet, and remove any obstructions from the surface of the vents.