Toshiba Tecra S4, User Manual

Page: 122 / 238

6-10 User’s Manual
Power and Power-Up Modes
■
The condition of the battery terminals - you should always ensure the
terminals stay clean by wiping them with a clean dry cloth before
installing the battery pack.
Retaining data with power off
When you turn off your computer with fully charged batteries, the batteries
retain data for the following approximate time periods:
Retention time
Battery operating time can be extended by lowering the screen refresh rate
from 60Hz to 40Hz. However, if the screen refresh rate is set to 40Hz, the
screen may flicker which could cause physical discomfort such as eye
strain. If you experience any of these problems, reset the screen refresh
rate to 60Hz.
Take short, strategically spaced rest breaks to avoid eye strain and body
fatigue. For example, stand up and walk around or stretch for a few
minutes every hour.
To change the screen refresh rate, follow the steps as detailed below:
1. Click start and click Control Panel .
2. Click Appearance and Themes and click Display to open the Display
Properties window.
3. Select the Settings window and click the Advanced button to open the
Default Monitor and Mobile Intel
®
945GM Express C... window.
4. Select the Intel
®
Graphics Media Accelerator Drive for Mobile
window and click the Graphics Properties button.
Select the Settings window, then select 40Hertz from the Refresh Rate
pull down menu and click the Apply button.
Battery type State and Retention Time
High capacity battery pack (8800mAh)
about 10 days (Standby Mode)
about 140 days (Boot mode)
Extended capacity battery pack
(7050mAh)
about 8 days (Standby Mode)
about 110 days (Boot mode)
Battery pack (4700mAh)
about 5 days (Standby Mode)
about 75 days (Boot mode)
RTC battery
60 days