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Originally Posted by KTamas
I thought that 44 hours is just a commercial trick 8O
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In a way it still is. It's akin to saying the Toshiba e800 has a '72 hour battery' because thats how long it will last, even in suspend mode. :-)
If you look at the medium and heavy use numbers the battery life is roughly double what the average PPC can do now -- that in itself shows that Asus did something other than misrepresent the battery life.
Off the top of my head, here's a few things that would give the kind of battery life boost -- it's most likely isn't a single factor but a few in combination that are contributing:
1) WM 5, so no juice needed to keep the RAM powered in standby
2) QVGA screen (requires a lot less power)
3) Possibly a new backlight (white LED?)
4) New Battery technology.
The latest thing for Li-ion batteries was a new process that increased the effective electrode surface area with a gain of 2-4x. Another possibility is that they went with a battery that has an overal lower internal resistance -- something which would not necessarily change the reported mAh rating of the battery. Mugen batteries will give you more time per mAh than an OEM stock battery because of this -- so a straight comparison of the mAh rating isn't necessarily a good one. What will matter in the end are the numbers from tests.
If it's 3) and 4) that are responsible for the battery life increase, you'd think that Asus would be touting that in it's press releases.
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Mobile-Review Reviews the Asus A636 and its Insane Battery Life
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