Starting power to the load, Installing the ups as a tower, Connecting the battery leads – HP Tower Uninterruptible Power System User Manual
Page 26: Starting power to the, Load

Installation 26
IMPORTANT:
Charge the batteries for at least 24 hours before supplying backup power to
devices. The batteries charge to:
•
80 percent of their capacity within 3 hours
•
100 percent of their capacity within 48 hours
Starting power to the load
Start power to the load by placing the UPS in Operate mode (on page
IMPORTANT:
AC power must be available the first time the UPS is started.
Installing the UPS as a tower
Before installing the unit, review and adhere to all warnings provided in "Precautions (on page
)."
Connecting the battery leads
WARNING:
To prevent personal injury from electric shock or damage to the equipment,
remove the battery lead labels, and verify that the ERM circuit breakers are in the Off
position.