Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
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Pack Operations
Battery Pack Operations
This section covers the following information concerning battery pack operating time:
Increasing battery pack operating time
Minimizing the energy required
Maximizing the energy stored
Conditioning a battery pack
Disposing of a used battery pack
Battery pack operating time differs depending on
several variables. To avoid unnecessary replacement,
consider the following variables when determining how long a charged battery pack should
last:
Power management settings
Hardware configuration
Software applications
Installed options
Display brightness
Hard drive usage
Changes in operating temperature
Type and number of installed PC Cards
NOTE: |
The power consumption requirements for PC Cards vary widely. Some
cards drain the battery pack very rapidly. |
Battery pack operating time can be increased
by as much as 50 percent by controlling the energy required by the computer and the energy
stored in the battery pack.
To minimize the energy required by the
computer, follow these steps:
Set the power conservation levels in the
Power Management utility to Maximum.
Customize the timeout value to work more
efficiently with the applications.
The amount of battery life depends on the values selected.
To maximize the energy stored in the
battery pack, follow these guidelines:
Condition the battery pack at least every 30
days to improve overall battery performance.
Keep a battery pack in the computer when
using it with AC power to supply the battery pack with a constant trickle charge.
Store the battery pack in a cool, dry place
when not in use.
 |
CAUTION: To avoid a loss of
data, ensure that all data is saved before discharging a battery pack. |
To condition a battery pack, complete
the following steps:
1. Plug in the AC adapter and allow the
battery to charge until the LED light on the display stops blinking. Your battery gauge
may read 100 percent for a period of time before LED light on the display stops blinking.
Do not unplug the AC adapter until the arrow disappears.
2. Unplug the AC adapter and allow the battery
to drain until the computer reaches hibernation and turns itself off. Do not plug in
the AC adapter during this process or you will need to restart with Step No. 1. You
may use the computer while the battery is draining.
3. Your battery is reconditioned.
4. Plug in the AC adapter and begin using the
computer.
The table below shows the approximate battery
pack charge times.
Approximate Battery Charge Time |
Computer |
On Line |
Off Line |
NiMH Battery Pack |
4.0 hours premature termination |
2:00 hrs |
Li ion Battery Pack |
4.5 hours premature termination |
2:50 hrs |
In the interest of safeguarding our environment, Compaq Computer Corporation recommends that nickel metal
hydride (NiMH) and lithium ion (Li ion) battery packs be recycled. Battery packs should be
handled in accordance with country, state, province, or local regulations.
 |
CAUTION: Never
attempt to open or service a battery pack. Opening a battery pack not only damages the
pack and makes it unusable, but also exposes
potentially harmful battery components. |
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