My final score was exactly 5 weeks on a single charge. Of which one week I did quite some extra reading, as I was down with the flu and stayed at home.
I think the average was between 1 and 2 hours of reading per day, and 25% of the time with backlight on lowest setting. All reading was done with CR3 by Bruce Lee. I think using CR3 makes a big difference, it uses little power.
I will try to repeat this with the upcoming firmware to see if there is any effect on battery efficiency.
Quote:
Originally Posted by joepie
I'm on my third and final full charge now. Batterymeter indicates 72% after 2.5 weeks with moderate use of backlight.
I took care to avoid adding books and did not update software during this period. Also I switch the Inkpad off when I stop reading for longer than 5 minutes.
One noticable dip was from 83% to 75% when I opened a pdf file and read 40+ pages. The first 17% were used in almost 2 weeks, the 8% drop to 75% was in 1 day. The operations are appearently much more costly when rendering pdf as opposed to epub. The pdf file has been replaced by an epub file.
BTW I use Coolreader3 for the 4.x.x platform by brucelee, remarkable how little power it uses. I bet I can squeeze out 6 or 7 weeks of normal usage (about 2 hours reading a day).
Only thing that I wish for is that the dictionary in Coolreader has larger font and better button selection overall. I'm curious to improvements in the upcoming firmware, but I think I can do perfectly fine with the current setup for years to come.
Joepie
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