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by seanp2k2
4875 days ago
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Very much related: http://news.ycombinator.com/item?id=5124170 "We don't know why lithium batteries work" Measuring usable capacity left in a battery is much more art than science still. You can model the drain rate and change your estimates based on historic usage and do all kinds of fancy FFT and other signal processing, but in the end it's still an estimate, batteries are not immune to physics, and li-ion batteries won't save the world (but they will create lots of hazardous waste in creation and disposal). |
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