In my well-known Pocket PC & Smartphone Magazine article Maximize Battery
Life by Minimizing Power Consumption! and, for example, Pocket PC
Thoughts-frontpaged Some new power consumption measurements (Dell Axim x51v,
HP iPAQ hx4700, Fujitsu-Siemens Pocket Loox 720, HTC Universal, HTC Wizard),
I've elaborated on how important it is to reduce the processor (CPU) usage
of a given application to gain the best battery life possible and/or force
the CPU to run at a lower clock speed.

In the current article, I elaborate on how all the known MP3-capable Pocket
PC multimedia players fare in this respect. You will really need to read
this article if you regularly listen to for example MP3 files for more than,
say, half an hour between recharges. You can save even hours of battery
uptime if you choose your multimedia player with the CPU usage in mind. As
you'll see, current multimedia players have vastly different CPU usage (and,
therefore, power consumption), particularly if you enable for example
equalization, digital signal processing (DSP) and the like.

I've previously also made some similar measurements with Pocket PC
multimedia players (see for example this article) and sound recorders (see
the well-known (see for example these remarks) Pocket PC Audio Recording
Bible), but have never compared ALL MP3 players directly to each other, on
the same Pocket PC, at the same time. Now, this omission has been fixed.



....



more info:
http://www.pocketpcmag.com/blogs/index.php?blog=3&p=1656&more=1&c=1&tb=1&pb=1




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Werner "Menneisyys" Ruotsalainen - Microsoft MVP - Windows - Mobile Devices
Please see the Pocket PC Mag Expert Blog (including mine) at
http://www.pocketpcmag.com/blogs/ - you will definitely like it.