Feb/100
Increasing Toshiba Satellite A200 battery life under Linux
Author(s)
Bill Giannikos
Introduction
This guide with provide you with tips to increase your toshiba laptop battery life under Linux when running on a laptop computer.
Tips
Use kernel with dynamic ticks
Since kernel 2.6.21, Linux includes a feature called dynamic ticks. Without getting too technical, the kernel reduces the number of ticks initiated when the system is idle, slightly reducing the cpu usage at this time and therefore extending toshiba a200 battery life. Fedora 7 has this feature on by default.
Ensure ACPI is enabled
Not so much a problem anymore as manufacturers are more actively checking that their ACPI implementations work under Linux but you should check that ACPI support is enabled. Without it you will get terrible power management and greatly reduced battery life. You can check if ACPI is enabled and running properly by typing dmesg in the console. If it is not working a kernel or BIOS update may fix the issue, if not then look up your laptop on these pages for more details.
Use CPU power saving
Most modern processors can dynamically reduce and increase their clock speeds. A utility is needed to do this such as cpufreqd or powernowd. My personal recommendation is powernowd, it is a simple program but works very well. These two utilities are included with most Linux distributions.
Blank screen when idle
A simple tip. Set the power settings to blank the screen when idle for a few minutes. The LCD display is one of the main consumers of power and so turning it off when not needed increases toshiba satellite a200 battery life greatly.
Use PowerTOP
Intel have developed a utility called PowerTOP. It’s aim is to see which applications on your system are using processing power and thus consuming extra battery. PowerTOP is starting to be included with many Linux distributions and you can also get it from the PowerTOP website.
Informations from: http://www.linwik.com/wiki/increasing+battery+life+under+linux
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Tips to Extend Your Toshiba Equium A200 Battery Life
1.If the toshiba equium a200 battery will not be in use for a month or longer, it is recommended that it be removed from the device and stored in a cool, dry, clean place.
2.Short toshiba satellite a200 battery life in a laptop is mainly cause by heat rather than charge / discharge patterns. Always charge a toshiba laptop battery in a well-ventilated area.
3.When charging the battery for toshiba satellite a200 meter calibration, periodically do a full battery (PA3534U-1BAS Battery) discharge, every 30 charges, to increase meter accuracy.
4.Another enemy of laptop battery life is heat. The optimal ambient temperature during charge is 50°F (10°C) to 86°F (30°C). If the ambient temperature rises above 95°F (35°C) the charge efficiency may be significantly reduced, and therefore result in a lower charged battery capacity.
5.Dim your screen – Most laptops come with the ability to dim your laptop screen. Some even come with ways to modify CPU and cooling performance,this will also save on toshiba satellite a200 battery drain.
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