[TriLUG] Laptop battery life comparison: Windows vs. Linux

[Nathan Conrad]

To make it more 'scientific', I suggest (under Linux) setting the CPU
to a lower power mode. I would bet that Windows is doing the same. The
easiest way is with the cpufreq support in Linux 2.6, although some
patches are available for 2.4.

-Nathan

On Thu, Jan 08, 2004 at 09:40:40PM -0500, Phillip Rhodes wrote:
> Ok, Mike Mueller had asked a question on this subject a while
> back, and I'd volunteered to benchmark my laptop under both
> Linux and Windows and compare the battery life.  Here are my
> (very unscientific) results:
> 
> The laptop in question is a Toshiba Satellite P25-s507,
> running Windows 2000 Server and RedHat 9.  The spec sheet
> says the estimated battery life is 2 hours.
> 
> Under Linux, I got almost exactly 2.5 hours of life
> before the battery died.
> 
> Under Windows, I have never let the battery actually die,
> but... I've ran the machine for about an hour and 15 minutes,
> and the battery life indicator read about 50%.  So, assuming
> the battery juice decays on a linear curve, it should be good
> for about 2.5 hours under Windows.
> 
> So, my very unscientific, semi-empirical experience is that
> the battery life is almost identical between Windows and
> Linux.
> 
> Mike, hope this helps..
> 
> TTYL,
> 
> Phil
> 
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Nathan J. Conrad                     Campus phone #5930
301 Scott hall, UNC Charlotte        http://bungled.net
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