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-   Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)
-   -   Battery consumption analysis (https://talk.maemo.org/showthread.php?t=43748)

afaq 2010-03-09 11:59

Re: Battery consumption analysis
 
The thread goes on. My battery eye graph is as random and inconsistent as others here.

People have said no other device can do IM, Web browsing and Music for this long - but yes they can. Nokia's N97 served me very well in battery life. I often used IM for 2 hours in the morning, and then email and web browsing through the whole day. By midnight I would have usually have about 50% battery left.

With the N900 - one hour of IM would take about 30/40% battery life. That is simply painful. Especially as I have 15 more hours left in the day where il need my phone. Dont always have USB plug in available.

msa 2010-03-09 20:37

Re: Battery consumption analysis
 
in addition to my last post:
i restarted the n900 today 4 hours ago, when the battery was at 50%.
now, 4 hours after restarting, the battery still shows 50%.

so there was definitely somethign going on in the system that drained power.

gamerakel 2010-03-09 22:52

Re: Battery consumption analysis
 
1 Attachment(s)
O_o with this strange power saving function enabled.
start 17:30 öhm 5.30pm. so loooong ;)
(strange i never reload the phone but the curve is raising)

msa 2010-03-10 00:02

Re: Battery consumption analysis
 
Quote:

Originally Posted by msa (Post 561723)
in addition to my last post:
i restarted the n900 today 4 hours ago, when the battery was at 50%.
now, 4 hours after restarting, the battery still shows 50%.

so there was definitely somethign going on in the system that drained power.

another 4 hours passed, battery still shows 50%.

i'll try to observe what triggers the rapid battery loss.

Tizbad2k 2010-03-10 00:17

Re: Battery consumption analysis
 
Just so you guys know, you cannot rely on these battery monitor programs %100. At best it should be used as a rough guideline of how much battery you are using or have left.

oskarmat 2010-03-10 11:15

Re: Battery consumption analysis
 
My sex lasts longer than my N900's battery life - and I am not proud of that

xav 2010-03-12 13:29

Re: Battery consumption analysis
 
This tool is really nice, thanks a lot !
While using it with powertop, I've discovered that my IM accounts were real power suckers. Now I've disconnected them all, and instead of something like 10hrs I run through the whole day with 60% battery left.

So there's a real problem with IM accounts. Too bad, being connected everywhere was the reason for buying an N900 in the first place.

BTW, would it be possible to integrate some powertop functionality into battery-eye ? Also, would it be possible to show (with a differrent color perhaps) when the device it charging ?

Thanks

geneven 2010-03-12 13:40

Re: Battery consumption analysis
 
This is a bummer, but remember -- you can carry an extra battery and it takes about ten seconds to change (plus time to reboot). I am not sure that the very purpose of the N900 is defeated because you might have to spend ten extra seconds sometimes.

Corwin 2010-03-12 15:08

Re: Battery consumption analysis
 
Quote:

Originally Posted by oskarmat (Post 562349)
My sex lasts longer than my N900's battery life - and I am not proud of that

Geez, you mean like half an hour of batterylife?

SCNR :D

blue_led 2010-03-12 20:02

Re: Battery consumption analysis
 
Battery can be monitored better by reading data from fuel gauge chip BQ27200. http://focus.ti.com/lit/ds/symlink/bq27200.pdf
It is connected on i2c bus 2 at address AA and AB ( hard coded on asic but i am not sure !! ) but these addresses are not listed on /sys

I add this to WIKI http://wiki.maemo.org/N900_Hardware_Power_Consumption


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