Quote:
Originally Posted by Moe The Cat
Okay. I haven't noticed that myself, but I'll keep a closer eye on it now. Dave, in FBReader the battery meter is indicated as a percentage. Does it jump numbers, like from 60% down to 55%, or does it just seem to deplete single numbers more quickly?
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The voltage changes over the middle 70-80% of Lithium batteries discharge curve are fairly small, so I imagine that it would be very difficult to get 1% resolution over the whole range. To put it another way, I sometimes notice some jumps too, but I still like the percent scale a lot better than just the four bars. BUT, because of the non-linear change in voltage in respect to charge state, I think the percent numbers need to be "taken with a grain of salt".
Quote:
Originally Posted by Moe The Cat
When you stop reading, is it at 60% and then you lock the keyboard and when you pick it up again it's at 55%? I don't use the keyboard lock myself. Maybe it's using extra juice to do that? I know, it doesn't make sense, but I'm just thinking out loud here.
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I notice something similar. Most of my embedded systems experience has been in developing and testing cell phone chips with built in microprocessors, and we had ways of causing the system to sleep without any power load to detect a wake up call. I do not have any idea what is used in these readers. I do recall though, that most of the time when we had excessive current drain during sleep was because one of the software engineers forgot to turn some part of the system off when the system went into sleep mode.