Actually this should've been really easy. A small script loop on the kindle to log the battery consumption and then plug that data into gnuplot. But it turned out gnuplot afaik doesn't support to output the difference between values. Thanks to apo_ from #gnuplot I've got it running with the help of awk now. The great thing is that this script runs in busybox and can hence easily be adapted for pretty much any kind of portable devices including Android phones, Kindles, Tablets, Notebooks, Netbooks, etc. And that's how it looks.
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| Kindle 3 Battery Consumption Measurement points are marked with an x. |
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