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-   Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)
-   -   N900 battery life questions, issues, scenarios (https://talk.maemo.org/showthread.php?t=31020)

Flandry 2009-11-27 22:03

Re: N900 battery life
 
Screen brightness makes a huge difference on the battery life of both my laptop and my Zaurus, so definitely set it as low as is comfortable for you.

It only takes one overcharge to really damage a lithium battery, so if the charging circuitry is bad, it could lead to a battery with really poor capacity.

RevdKathy 2009-11-27 22:07

Re: N900 battery life
 
Quote:

Originally Posted by jjx (Post 396850)
As opposed to every 15 minutes through the night.

Could it be the email checking app is a power hog?

If the answer is maybe :) could it be dependent on the size of inboxes and/or IMAP vs. POP? There are reports that the email app is very slow on large inboxes - implying it's a CPU hog at processing them. That shouldn't affect fetching a few new mails but you never know, if it's doing something silly to compare remote and local inboxes. Just a thought.

We could with a tool that measures the cumulative system resources spent on different apps - CPU time, network activity etc. "time" does it for one process, but not cumulatively over many instances of the same process.

Try it again tonight with the email autocheck turned off. After all you don't need the email checking every 15 mins while you're asleep anyway. If that solves it, you have your answer.

You might also want to look at this app

maulikmorzaria 2009-11-27 22:09

Re: N900 battery life
 
Non battery related question does the N900's keyboard is backlighted??

RevdKathy 2009-11-27 22:10

Re: N900 battery life
 
Quote:

Originally Posted by maulikmorzaria (Post 396860)
Non battery related question does the N900's keyboard is backlighted??

Non-battery answer - yes. ;)

maulikmorzaria 2009-11-27 22:11

Re: N900 battery life
 
thnx RevdKathy for ur non battery RELATED answer.

Cherrypie 2009-11-27 22:14

Re: N900 battery life
 
Quote:

Originally Posted by maulikmorzaria (Post 396865)
thnx RevdKathy for ur non battery RELATED answer.

This Quote is non battery RELATED.

(sry, just had to. :))

Untouchab1e 2009-11-27 23:17

Re: N900 battery life
 
I am rather puzzled about the great difference in battery life that users are reporting. I think the only thing we can do is just wait for more people to actually get the device. Nokia havent said anything about why shipments of the N900 has basically frozen or at least delayed. I am patiently waiting.

shapeshifter 2009-11-28 01:28

Re: N900 battery life
 
btw, is it possible to disable the keyboard backlight? I won't need it during the day.

sadfist 2009-11-28 02:42

Re: N900 battery life
 
Flip side of such a complex and capable device, its so easy to kill the battery without being able to pinpoint the cause. The terrible battery life I got in the previous examples it mixed with days where I get pretty good battery life. I think we'll see battery life improve greatly once the N900 is readily available and developers etc. all have one and apps can be more thoroughly/widely tested.

Overall, given the capabilities of the N900 and the size of the battery I'd say battery life is pretty good. Although I see a good argument now for all the people who wanted the ability to create more than 2 profiles. BATTERY SAVER profiles, hehe.

qole 2009-11-28 07:41

Re: N900 battery life
 
Just a few notes from personal experience.

If you mess at all with the WiFi power settings, your battery life will really, really suck.

Also, beware desktop widgets that display info that gets updated regularly. I was warned at the Summit by people in the know that the Facebook widget isn't very power-optimised.

If you need better battery life, turn off e-mail checking, too. I've heard reports from hard-core users that it can really help your battery life.

Taking a lot of photos really seems to hammer the battery.

Best thing to have is that "load-applet" mentioned above and watch the left indicator. If it stays at four squares, with the top one flashing red, for any length of time, your battery is headed for a premature demise.

I notice that occasionally (seems it might be related to XChat? Not sure), some mysterious process called hildon-xinput-sounds hammers my CPU and I have to kill it or suffer a quick battery death.


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