“I don’t think that batteries discharge lineraly enough to extrapolate your 10% in 30 minutes to 100% in 5 hours, it’s just a coincidence that I get about 5 hours.”
You’re right with that, timg. The linearity of the battery status is not given at all. As far as I read here, usually the first 50% displayed are like 80% of the real overall capacity while the last 40% are like 10%, something around this, please don’t fix me on that numbers. My clip has another funny effect. Around 50%-60% displayed battery status it seems to have most of the actual battery capacity, since the same 30 minutes flac take ony 4% of displayed capacity here. Calculations get really hard under such circumstanses, if not plain impossible.
What I said was this: Starting at 100% displayed charge status, 30 minutes flac use that much energy, that 90% are displayed… whatever that means for the overall capacity for flac. 128kb mp3 starting at 100% take way less, like displayed 2% or 3%. So, even if that gives no absolute information, it gives the relative one, that the used formats make a huge difference in battery usage. And flac and vorbis are well known to suck mp3-players dry very much quicker than “normal” mp3, which seems to be true for any mp3 player which supports those formats. I was just surprised how much more energy it uses.
Please let us know the results of your test with pure mp3.
In the thread for the new firmware update I just read others who complain extreme power usage while playing ogg. 4h to 5h seem to be the normal capacity for pure ogg playing. You might want to have a look here: Firmware update discussion (Page 3)
Message Edited by Huegli on 02-25-2010 03:53 AM
Message Edited by Huegli on 02-25-2010 03:55 AM