HP D6028-90004 - Manual (Page 94)

Appendix E Battery Operation
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The HP TopTools Remote Control card also provides the following alternate
charging modes:
•
Fast charge. If the card determines that the battery has been depleted, it
begins a fast charge.
•
Trickle charge. When the battery is fully charged, the card switches to a
trickle-charge mode of operation.
When power is first applied to the card, the battery is always initially fast
charged. (This is true even if the battery is already fully charged.) After a few
minutes, if the card’s on-board circuitry determines that the battery’s cells are
fully charged, HP TopTools Remote Control automatically switches to
trickle-charge mode.
Battery Initialization
If the server’s power is interrupted, HP TopTools Remote Control automatically
switches to battery operation. HP TopTools Remote Control logs the event and
generates an alert (if so configured). In addition, some HP TopTools Remote
Control functions that require the server to be powered up are also suspended,
including console redirection, PCI Bus Utilization monitoring, and server resets.
If a remote connection is active when power is interrupted, the connection will be
maintained. The HP TopTools Remote Control card will continue to function for
at least one hour on battery power.
NOTE If you are using an external modem with HP TopTools Remote
Control, the modem won’t have access to battery power. To
guarantee power to an external modem, use a modem that is
attached to an Uninterruptible Power Supply (UPS).
Life Expectancy
The life expectancy of the battery pack varies depending on temperature extremes
and number of charging cycles experienced by the cells. A nominal life
expectancy is over two years. If the card provides less than half an hour of
operation while operating on battery power, it may be time to replace the battery
pack.