3Com Powerware Uninterruptible Power System Prestige Series - Manual (Page 52)

Installation
46 Powerware ® Prestige Series Installation and Operator’s Manual for IBM Applications (3000 VA) Uncontrolled Copy
Troubleshooting Tips
If you should encounter any problems during startup, see the
troubleshooting chart on page 71.
The battery cabinets are shipped with the batteries charged. However,
batteries may lose some of the charge during shipping and storage. You
can use the UPS immediately after unpacking, but it may not provide the
full-rated backup time during a power failure. Upon initial startup, the
UPS may need to operate for approximately 8 hours before the battery is
fully charged and full battery-backup time is available. If the Battery
Fault indicator flashes, operate the UPS for 24 hours to fully charge the
battery.