Appendix B - Battery Pack Operating Time
Introduction
This appendix covers the following information concerning battery pack
operating time:
o Increasing battery pack operating time
o Ensuring battery gauge accuracy
o Conditioning a battery pack
o Disposal of a used battery pack
B.1 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:
o Power management settings
o Hardware configuration
o Software applications
o Installed options
o Display brightness
o Hard drive usage
o Changes in operating temperature
o Type and number of installed PCMCIA cards
NOTE: The power consumption requirements for PCMCIA cards vary widely. Some
cards drain the battery pack very rapidly.
Table B-1 shows battery pack operating times by model based on worst to
best case.
Table B-1. Battery Operating Time
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Computer Hours
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LTE Elite 4/75CX 2.5 - 4.0 hr
LTE Elite 4/50CX 2.5 - 4.5 hr
LTE Elite 4/40CX 2.5 - 5.0 hr
LTE Elite 4/50E 3.0 - 5.5 hr
LTE Elite 4/40C 3.0 - 5.5 hr
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Battery pack operating time can be increased by as much as 50% 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, practice the following:
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