after a deep study of my n9, i can tell you thtat the worst battery drainer is SKYPE connection always on.
After turn it off, my average idle consumption goes from 20 to 35
in this way my battery last 15 hours per day
i just charge it by night
Sort of still on topic, but is anyone noticing that the battery remaining can vary really dramatically? Today I was recording a video and about 2 minutes in, I got a battery low warning and the recording stopped. I fired up battery monitor and sure enough, it showed 4%. Active usage was around 224mah, but it had still shot down from 55% pretty fast. So I stopped recording and checked on the phone about 15 minutes later and battery was now showing 45%.
Similar thing the other day when I went to sleep, the phone showed 5% remaining and when I woked up it had 25%.
It's been 1 month or so since i got my n9 and i haven't been experienced any battery related issues until week ago. My battery remaining was vary sometimes as jonathandtcox mentioned. But today i had the my first battery drainage. My all accounts were online except nokia account (facebook,twitter,google and skype) then suddenly my phone heat up bit. I was kind of worried and restarted my phone. Got rid off from heating instead i had battery drainage(40mA to 229mA). I hope this will be fixed in upcoming update (PR 1.2).
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