The power issue is a real knotted mess of subjective variables. Kobo says that you should get up to 2 months, with "average" reading. Somehow I doubt that there are any "average" readers here. A battery's performance changes over time and with changing conditions. The monitoring circuit and charge management appears to need a calibration process before it provides consistent results. Use of the device during that period can effect the outcome.
A user's perception of their use of the device and the length of time that has elapsed since the last charging can vary greatly, few of us keep a calendar of both and can correlate that data. The cases where the monitoring display shows a larger than should be expected drop in capacity overnight, seem to show a real problem. But I am not sure, how or if, that effects the battery's performance over a longer period. It may be more alarming to the user, but not something that has a lasting effect on how much reading you can do between charges.
For Koreader there are additional concerns, how was it launched? KSM? or some other method? Has Nickel been started before Koreader was? Maybe there is some unplanned interaction with Kobo's firmware? Which FW? Which device? Which Koreader version? Which KSM version? Power Management is a very low level function, closer to the hardware level, almost anything could be effected by it, or effect it.
Personally, I would be amazed if the team can even track this down to a correctable issue.
For me, I just charge my AuraHD whenever I think of it, or it reads a little lower than I would like (I try to have ~60%, at least). Of course I use mine all the time. I know for sure it lasts a lot longer than my tablet. A number of days, as opposed to a number of hours. If I am charging it up averaging every 3 or 4 days, instead of every two months, I don't feel cheated or that there is a problem with my device, or Koreader.
Luck;
Ken
|