| FormerPalmOS |
01-30-2009 03:06 PM |
Re: ++25 Jan 09++ [VZW] SSK 1.2 - {CE OS 21109} Kitchen and ROM's!
Quote:
Originally Posted by cxi
(Post 678773)
One thing to remember is that different physical location could produce different results. If you're testing in a strong EVDO area you may not see the same power draw that someone in a fringe area who's flopping between 1X and EV might see. My friend who's in such a fringe EVDO area gets maybe 70% of the battery life that I do, and I'm certain I use mine more. Some radio software could conceivably handle tower swaps or error correction for weak signals better than others. Anyway, just a thought that would support both your findings and the what other people have reported.
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Variable radio power output is an integral part of CDMA. The tower and your mobile terminal constantly negotiate the transmit power at each end necessary to achieve a target received power at the other. If you have a weaker signal, your TX power will be higher and your battery will drain faster. Even in stand-by. When talking, it's faster still. And on EVDO with a weak signal, if you listen close you'll hear a giant sucking sound...
Also, there is no way to instantaneously measure the current draw in this phone - you have to average. I assume the program Bob has been using does this (though not sure how). And there is no such thing as a 1% accurate Li-Ion battery meter. Battery life is calculated by the battery manager chip as an integration of current over time, corrected at each full re-charge for decreasing battery capacity. The reported error is more like +/- 10% so just because you see 1% increments don't mean they are meaningful. Not trying to be negative here, just tell it like it is. |
