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-   -   N900 Power Consumption Profiles (https://talk.maemo.org/showthread.php?t=32785)

Hogwash 2009-10-13 20:58

N900 Power Consumption Profiles
 
All you lucky buggers that have N900 devices - could you please indicate what kind of device/firmware you have (development, pre-release summit etc) along with your typical usage profile and how long your battery lasts?

Are you a 'power user' that lasts from 09:00 to 14:00 before a recharge?

Are you a blogger that can rock online all day 09:00-17:00?

Yes, the 'final firmware' may well change things, but I'd be interested to get an overview of how things stand.

pycage 2009-10-13 21:10

Re: N900 Power Consumption Profiles
 
Battery lasts from 6am to 11pm, and would even longer, but that is when I charge it over night.
On a typical working day, a few minutes of phone calling, moderate web surfing, up to 2 hours of playing music over FM transmitter, and being always online with 3G, pulling weather updates regularly.
My current firmware is OS 41-10. Battery life improved a lot with OS 39-x IMHO. Have been using the device since mid of September.

bugelrex 2009-10-13 21:18

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by Hogwash (Post 345737)
All you lucky buggers that have N900 devices - could you please indicate what kind of device/firmware you have (development, pre-release summit etc) along with your typical usage profile and how long your battery lasts?

Are you a 'power user' that lasts from 09:00 to 14:00 before a recharge?

Are you a blogger that can rock online all day 09:00-17:00?

Yes, the 'final firmware' may well change things, but I'd be interested to get an overview of how things stand.

Might be worth considering a list of parameters when replying. Eg
starttime:
endtime:
num bars at endtime:
% of time on 3g:
% of time on Edge:
% of time on wifi:
screen brightness: [high | medium | low]
always online: [yes | no]
num mins voice call:
num mins skype call:
num mins Instant messaging:
num mins gps:
num mins video:
num mins music:
email always connected: [yes|no|poll interval]
list of apps connecting to internet:

vkv.raju 2009-10-13 21:54

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by bugelrex (Post 345747)
Might be worth considering a list of parameters when replying. Eg
starttime:
endtime:
num bars at endtime:
% of time on 3g:
% of time on Edge:
% of time on wifi:
screen brightness: [high | medium | low]
always online: [yes | no]
num mins voice call:
num mins skype call:
num mins Instant messaging:
num mins gps:
num mins video:
num mins music:
email always connected: [yes|no|poll interval]
list of apps connecting to internet:

Just asking, would you want this data in an excel sheet or just plain vanilla data should suffice??

bugelrex 2009-10-13 22:00

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by vkv.raju (Post 345771)
Just asking, would you want this data in an excel sheet or just plain vanilla data should suffice??

Sorry I'm not detecting the sarcasm...

dantonic 2009-10-13 22:06

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by bugelrex (Post 345777)
sorry i'm not detecting the sarcasm...

ironyyyyyyyyyyy! :D

Hogwash 2009-10-14 00:40

Re: N900 Power Consumption Profiles
 
Let's not get anal about this....any data within the context of my original post...however you feel best communicates it...that's fine :)

Hogwash 2009-10-14 00:41

Re: N900 Power Consumption Profiles
 
pycage - thanks for your itinerary...that's very helpful to know :)

chrisp7 2009-10-14 02:37

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by dantonic (Post 345786)
ironyyyyyyyyyyy! :D

I think you need to look up what irony means;)

Bratag 2009-10-14 03:04

Re: N900 Power Consumption Profiles
 
Thanks for the info Py. Sounds like there will be no issues with the battery. I would have thought streaming via the fm transmitter would have killed it quick - but it seems like thats not the case. HUZZAH!

toratoko 2009-10-14 03:08

Re: N900 Power Consumption Profiles
 
Hot sizzling warm after-effect on clothes?

Quote:

Originally Posted by chrisp7 (Post 345939)
I think you need to look up what irony means;)

Don't mind me....I'm just really bored and still at work :(

eiffel 2009-10-14 10:19

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by bugelrex (Post 345747)
Might be worth considering a list of parameters when replying. Eg
starttime:
endtime:
num bars at endtime...

I'd go the other way and say that all we need is a yes/no answer to a single question: "Does the battery last the entire day for you, without needing to modify your usage to conserve the battery?"

If 99% of users answer "yes", the other details don't really matter.

Regards,
Roger

Jaffa 2009-10-14 12:37

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by eiffel (Post 346095)
"Does the battery last the entire day for you, without needing to modify your usage to conserve the battery?"

No. (It's getting better, but taking it off charge at 7am, using A2DP for 50 minutes in the morning will mean I have it connected to my laptop on USB charge all day to be confident of being able to call home/use A2DP on the way home at 7pm.)

pycage 2009-10-14 15:57

Re: N900 Power Consumption Profiles
 
Battery status on my N900 after 12 hours.

http://farm3.static.flickr.com/2636/...2db44fdd_o.png

Making a 5 minute phone call, being online with 3G all day, checking weather status, checking for new applications, using the photo viewer a bit, but did no websurfing.

ysss 2009-10-14 16:23

Re: N900 Power Consumption Profiles
 
I think 3G burns through the battery at least 2x more than 2G or 2.5G.

frals 2009-10-14 16:25

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by pycage (Post 346344)
Battery status on my N900 after 12 hours.

[...]

Making a 5 minute phone call, being online with 3G all day, checking weather status, checking for new applications, using the photo viewer a bit, but did no websurfing.

Online as having 3G reception or actually connected with 3G?

pycage 2009-10-14 16:36

Re: N900 Power Consumption Profiles
 
Connected to 3G data service, thus having internet connectivity.

The screenshot states 2.5G but that's because I took the photo when I arrived home where there is no 3G.

Jack6428 2009-10-14 17:26

Re: N900 Power Consumption Profiles
 
So basically the N900 is just about the user and how he uses it. You can kill it in a few hours, but at the same time it can last you days... I will be fine, i know that. Can't wait.

When i get the phone, should i let the battery charge fully, or will just for a few minutes be enough and continue with charging later on?

TA-t3 2009-10-14 17:33

Re: N900 Power Consumption Profiles
 
Charge it 20 minutes or so, then you should be able to safely power it up. Don't start calling on the phone right away though, that'll suck more power than anything else you could do. And just keep charging while you play with it.

archebyte 2009-10-14 19:00

Re: N900 Power Consumption Profiles
 
being a moderate phone/internet user, the battery is at 20% at the end of the day.

a couple of days ago, it was at 40% 3 hours after it was fully-charged. turned out that microfeed was hogging 99% CPU.

in my opinion the battery consumption is acceptable.

twaelti 2009-10-14 20:33

Re: N900 Power Consumption Profiles
 
Today, starting with a ~80% full device:
  • Turning on the device in the morning (shouldn't do that, is said to use a lot of power). Doing that to make sure that I don't awake from some email alerts in the night... should probably better just go to offline/flight mode :-)
  • Received 3 SMS, sent 3 SMS
  • Two calls over 3G, about 15 min.
  • 1 hour of music listening (50% over bluetooth, 50% with simple plugin headset)
  • Showing off some fotos (5 minutes)
  • Using the calendar (5-10 minutes)
  • Using Wordpy to configure it and get posts (5-10 minutes)
  • 1/2 hour of surfing
  • Always online, getting alerts for received SMS and Emails. 50% home wifi, 50% UMTS 3G/3.5G
  • Mauku running +/- all day long,receiving over 50 tweets
Now, 14 hours later: 1 bar left in the status display.

RWFarley 2009-10-14 20:52

Re: N900 Power Consumption Profiles
 
OK. lets go the other way. how fast can you burn through a battery?

On my E90 I get multiple days battery life. BUT, if I'm listening to podcasts (LCG Jukebox is a notorious batt. Hog) over Bluetooth while browsing the web, and recording GPS points, I can drain a battery in 3-4 hours.

Shall we see who can drain a battery fastest, and how they did it?

Hogwash 2009-10-14 21:10

Re: N900 Power Consumption Profiles
 
Jam a paper clip into the battery connectors....that'll drain it.

I'll bet TV-out drains it too.

pycage 2009-10-14 21:36

Re: N900 Power Consumption Profiles
 
<irony>
watching another thread derail...
</irony>

dantonic 2009-10-14 22:01

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by pycage (Post 346703)
<irony>
watching another thread derail...
</irony>

You're right. I'm very interested in the information on this topic. deleting my off topic messages.

my apologies

Alex Atkin UK 2009-10-14 22:16

Re: N900 Power Consumption Profiles
 
Anyone here using MSN, AIM, Yahoo etc and tried being connected with those all day? Does it remain connected while the N900 is locked and make a sound when a message comes in?

That was what I hated about WinMo, when in standby it halts the CPU so cannot remain connected to IM without staying powered up and simply blanking the screen, which drains the battery fast.

convulted 2009-10-14 23:11

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by Alex Atkin UK (Post 346732)
Anyone here using MSN, AIM, Yahoo etc and tried being connected with those all day? Does it remain connected while the N900 is locked and make a sound when a message comes in?

That was what I hated about WinMo, when in standby it halts the CPU so cannot remain connected to IM without staying powered up and simply blanking the screen, which drains the battery fast.

(I do NOT have an N900. Having said that...) On every one of the previous tablets, the tablet would enter power saving mode but would still issue alerts, etc., when necessary. That and use almost no power, even when connected to WiFi all through the night.

bemymonkey 2009-10-15 16:27

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by convulted (Post 346761)
(I do NOT have an N900. Having said that...) On every one of the previous tablets, the tablet would enter power saving mode but would still issue alerts, etc., when necessary. That and use almost no power, even when connected to WiFi all through the night.

I hope that applies to the N900 too... that would be a killer feature :)

pycage 2009-10-15 17:54

Re: N900 Power Consumption Profiles
 
Quote:

Originally Posted by bemymonkey (Post 347373)
I hope that applies to the N900 too... that would be a killer feature :)

I think that describes the N900 pretty well, so yes. :)

Pinatz 2010-12-07 19:33

Re: N900 Power Consumption Profiles
 
Sorry for pushing such an old thread but some people land here through google like me. I researched a little bit and the N900 has this feature too.
Read more about it here http://wiki.maemo.org/Wifi_power_saving_mode
Btw: As far as I see the powersaving is set to max automatically in the newest version :)


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