Octagenarihexate, does your JB turn off when you press the power button when you stop reading? My libre never turns off, just goes to sleep. (some say the only way to turn it off is to reset the thing). I put it to sleep on the last page of the book I was reading, but it the power is still enough for about two weeks when reading 1/2 hour each day.
Another thread said that Li-ion batteries don't like to get discharged so that you should charge them back up when you get to the last bar. But someone here said differently, so I guess it's hard to know.
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