HP Remote Assistant Card - Manual (Page 169)

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G Battery Operation
The HP Remote Assistant EISA Board includes an on-board Nickel Cadmium (NiCad)
battery pack that ensures a supply of power to the board components, including the on-
board modem in Models D2968C and D2969C. This battery pack contains five cells
and is rated at 6.0V at 1100mAH. In case of a cutoff of AC power to the server, or a
power supply failure, the battery can continue to power the HP Remote Assistant for
up to one hour. The pack is attached to the board with two plastic darts and is
designed for easy customer removal and replacement.
NOTE The HP Remote Assistant board can continue to perform its functions with a
non-operating battery as long as power is being supplied to the server.
Charging
To ensure maximum availability of battery power, the HP Remote Assistant EISA
Board provides two modes of charging while AC power is applied to the host server. If
the board determines that the battery has been depleted it begins a "fast charge." When
the battery is fully charged, the board switches to a "trickle charge" mode of operation.
You can view the current state of the battery pack by showing current status from
either the Management Program, or the Configuration Utility. The status will indicate
whether the battery is Charging (fast charging), or Fully Charged (trickle charging).
When power is first applied to the HP Remote Assistant EISA Board the battery will
begin "fast charging." (This is true even for a fully charged battery.) The on-board
circuitry requires several minutes to determine if the cells are fully charged and to
switch to trickle charging.