Maintenance
& Service Guide
Presario 1200 Series
Models: 1255, 1256, 1260, 1262, 1266, 1267, 1272, 1273, 1274, and 1275
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Pack Operations
This appendix covers the following information
concerning battery pack operating time:
Increasing Battery Pack Operating Time
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.
Minimizing the Energy Required
To minimize the energy required by
the computer, follow these steps:
1. Set the power
conservation levels in the Power Management utility to Maximum.
2. Customize the timeout
value to work more efficiently with the applications. The amount of battery life depends
on the values selected.
Maximizing the Energy Stored
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.
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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 re-conditioned.
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 |
2:00 hrs |
Li ion Battery
Pack |
4.5 hours |
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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