Maintenance
& Service Guide
Presario 305 Model
MSG Index | Home
Page | Notice | Preface | Product
Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery
Pack Operations
This appendix covers the following information concerning
battery pack operating time:
- Increase battery pack operating time
- Conditioning a battery pack
- Disposal of a used battery pack
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:
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.
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.
Conditioning a Battery Pack
 |
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. Allow the battery to drain until the
computer reaches hibernation and turns itself off. Do not plug in the AC adapter during
this process. Also, the system should not be allowed to sleep. To prevent sleep, you
may either use the computer while the battery is draining, or you may disable power
management.
2. 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.
Your battery is now re-conditioned, and you
may begin using the computer normally.
The battery pack charge time may vary greatly
from 2 hours to 5 hours or more, depending on many factors (including whether it is
charged on-line or off-line).
Disposal of a Used Battery Pack
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 expose potentially harmful battery components. |
|
Top of Page
|