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myname24 is offline myname24
2013-05-17 , 16:42
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#11
PR 1.3 has some serious issue with battery reporting . And that 4% bug is irritating because it won't let me use the camera or download apps .
 
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Loepoes is offline Loepoes
2013-05-17 , 16:48
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#12
Yep, I've experienced it already for a long time...Somehow you get used to it...
 
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Win7Mac is offline Win7Mac
2013-05-17 , 17:02
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#13
Originally Posted by Loepoes View Post
Yep, I've experienced it already for a long time...Somehow you get used to it...
Always from 93% exactly?
Already tried calibrating?
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Lucazz990 is offline Lucazz990
2013-05-17 , 17:29
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#14
It happens to me too sometimes... And also if I charge the N9 while it's in charging-mode, when I turn it on it's shows about 88-94 % and not 100% as expected!
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Win7Mac is offline Win7Mac
2013-05-17 , 17:37
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#15
Originally Posted by Lucazz990 View Post
And also if I charge the N9 while it's in charging-mode, when I turn it on it's shows about 88-94 % and not 100% as expected!
You mean when you charge the phone while it's powered off? - Then that's quite expected I'd say, as booting takes pretty much power, ~4% from my experience.

No idea why these threads got merged commentless, op had a different issue, more like what Lucazz990 experienced...
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Last edited by Win7Mac; 2013-05-17 at 17:50.
 
imaginaryenemy is offline imaginaryenemy
2013-05-17 , 18:27
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#16
Pretty interesting article...

http://talk.maemo.org/showthread.php...t=battery+bump

It speaks to several issues addressed in this thread(s).
 

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Win7Mac is offline Win7Mac
2013-05-17 , 22:49
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#17
Thanks for the hint, a good read. Most important message I take out of it:
"Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory."
Also the link at the end of the article is worth a read: http://batteryuniversity.com/learn/a...ased_batteries
Most important message I take out of that:
Avoid charging a battery faster than 1C; a more moderate charge rate of 0.7C is preferred. Manufacturers of electric powertrains are concerned about super-fast charging of 20 minutes and less.
I probably stay away from the wall charger and use my PC if possible or even settle for a low-current charger.

But all that's not explaining why -while charging- status suddenly rises from 93 to 100%. Must be some kind of misallignment. I'll report after I get a calibration done. Last time I tried desperately to get the phone to not power up when connecting charger, but it just kept on booting even at ~dead battery...
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Janitor X is offline Janitor X
2013-05-19 , 10:01
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#18
Originally Posted by Win7Mac View Post
Last time I tried desperately to get the phone to not power up when connecting charger, but it just kept on booting even at ~dead battery...
Turn off dev mode. That's what keeps it booting up every time you connect the charger.
 

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Loepoes is offline Loepoes
2013-05-19 , 10:10
Posts: 56 | Thanked: 25 times | Joined on Apr 2012 @ Cape Town,South Africa
#19
Originally Posted by Win7Mac View Post
Always from 93% exactly?
Already tried calibrating?
Not sure if it is at 93% each time as I don't watch it charging all the time, but ist is somewhere between 90 and 95% before hitting the 100% a few seconds later.
 

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Win7Mac is offline Win7Mac
2013-05-29 , 22:39
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#20
Originally Posted by Janitor X View Post
Turn off dev mode. That's what keeps it booting up every time you connect the charger.
Indeed that did the trick, great find!

So I did the calibration-charge twice and switched dev-mode back on again and hoped for cure... but just had the chance to look at my battery jump from 93 to 100 % again, while charging from PC-USB.
So I guess we have to get used to it like Loepoes already stated.
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