Re: N900 battery life
 

This might help when near a power socket:

http://maemo.org/community/brainstor..._improvements/

Re: N900 battery life
 

hey there i want to ask you i want to purchase and orginal nokia spare battery BL-5J from amazon are they original or just chinese garbage ? thnx

Re: N900 battery life
 

hard to say, CCMACCESSORIES doesn't even have them on their web site but do through amazon...

I never got why those battery were so hard to find or so expensive!

Battery life..
 

I've heard reports that battery life isn't exactly going to be spectacular (around a day's worth). Is that a day's worth of fulltime usage, or a day on standby? Because if it's a day of standby, I kind of hope that there's going to be a battery with more juice floating around sometime in the future..

Re: Battery life..
 

There are other threads about this where this is already being disussed extensively, You can just do a search to find these

http://talk.maemo.org/showthread.php...t=N900+battery

http://talk.maemo.org/showthread.php...t=N900+battery

Re: N900 battery life
 

[QUOTE=dansus;328493]Nah, with Joiku Spot on, i got 60mins. :p/QUOTE]

And a free hand warmer! I remember the N82 (despite being superior to the N95 in this regard) would run out of battery after a few hours whilst chargingand running Joiku Spot.

What would be useful is an app to only use 2G/2.5G connections when pinging/idle/updating emails; then turning on the 3G/3.5G connection when the web browser is loaded. Turing off 3G connections gave me about 50% more battery life on both my K800 and N82.

Re: N900 battery life
 

I'm fine with a day's life of *constant* use. What bothers me is whether or not that day's worth of battery life is for sleep/idle too, because I really don't want to be charging my phone daily. I have to do that now due to a bad battery, and I'd really like to move on to something better.

Re: N900 battery life
 

I'm test user of prototype of N900 with firmware version 41-13.

I'm very satisfied of the battery life with moderate use. The best result for me have been 60 hours. I have used all the features and the working days have been normal.

In heavy use I haven't seen any difference with earlier firmware versions. If I see a long movie and wlan continuously on then the battery holds 4 to 5 hours. In normal quite heavy use it holds easily 15 hours which is usually enough for me, cos I charge the battery every night anyway.

Re: N900 battery life
 

Can it hold 15 hours with only 3G or edge and no wifi? Its been mentioned that wifi is much easier on the battery than 3G.
Thanks!

Re: N900 battery life
 

I never tested to have only 3G on whole day, cos I've wlan at home and at work and I use every opportunity to use free wlans. I try to test that tomorrow. I suppose that should succeed.

Re: N900 battery life
 

The battery definitely drains significantly faster with (1) 3G and (2) heavy photography use.

Re: N900 battery life
 

That was piece of cake. No problem at all to achieve 15 hours with 3G use on whole time. Actually there is 3/4 of battery left. Of course I was in the region where there was good coverage of 3G.
If there is poor coverage then the battery drains very fast.

Re: N900 battery life
 

great news! much appreciated!! Unfortunately for those in USA, many parts of t-mobile 3G is terrible!

Re: N900 battery life
 

I'm curious wheter you connected to the GSM cellular network? and did you make calls? or was it idle and used as a tablet?

Was this usage with calls over 3g? or idle?

Hope to hear from you, gracias.

battery lifetime
 

Hey guys,
i was wondering if any of you knows how long battery lifetime of n900 is...do you think it could handle playing like two hours of video or audio, some web browsing and still last entire day?

Thanks, Tomas Herman

Re: battery lifetime
 

there have been many threads about this...search is your friend..but to answer you, yes...

Re: battery lifetime
 

That’s one thing that I’m really curious too.
Can any of the 300 lucky ones speak?
I’ve searched but didn’t find no topic related.

Re: battery lifetime
 

thanks :] looks like ill be finally able to watch Scrubs on my way to collage ;]] btw i tried to search but it didnt work out too well ( http://talk.maemo.org/search.php?searchid=5629265 ) :]

Re: battery lifetime
 

Here's one of such thread:
http://talk.maemo.org/showthread.php?t=31394

and another one, with usage profiles included:

http://talk.maemo.org/showthread.php?t=32785

Re: N900 battery life
 

i'm iphone3g's user unfortunately i'm not satisfied with the battery, mostly the battery can last about 9 or 10hrs, if the n900 can last about the same, its useless for me.

Re: N900 battery life
 

There is one difference between them,
you can chance the n900 battery

so 9h of useage is quite accaptable for me

Re: N900 battery life
 

What if one used a theme which requires more brightness such as a white theme?

Re: N900 battery life
 

Is that a joke?

I'll just change my laptop's wallpaper to solid black to improve my battery life!

Re: N900 battery life
 

That's not how LCDs work. The light comes from a backlight behind the LCD, then the LCD blocks bits of the light off to make the image. A dark image still has the backlight using the same amount of power as a light one.

Re: N900 battery life
 

Of course I was connected to normal cellular network whole the time and made some calls.I had normal daily routines and there was about 10 calls (1min to 20 min). I meant with 3G that I had 3G connected.

Re: N900 battery life
 

It's true. A white background can safe you a few mWh's.
I tested this extensively on my old x24 thinkpad.

But it will in no way have any noticeable impact on overall battery life (could give you a few extra seconds, not more).

Re: N900 battery life
 

With normal use I can assure You that N900 battery holds much longer than Your phone, It holds easily 14-16 hours in heavy use. With moderate use it holds two days. And you can carry spare battery with You.

Re: N900 battery life
 

Thanks, interesting. So the light has no dimmer, makes sense, LED. Is the reverse true though? In a white theme you could set the brightness very low and still see everything well whereas the same is not possible with a dark theme. Or does brightness not affect battery life at all?

If so, I'd find that rather strange because my laptop's screen is considerably darker when disconnected from AC instead running on battery. This is default configuration set by gnome-power-manager settings.

Also, my Nokia E71 boots up with very dimmed logo. Almost not able to see. Only after it asks for PIN it will light up normally, and after 15 sec no interaction it will already set to a more dimmed screen (again, default power settings).

Re: N900 battery life
 

The backlight intensity can be varied. What I was trying to say was that the power consumption didn't vary depending on what image is display, whether a light image or a dark image.

Re: N900 battery life
 

Just for that reason the light sensor is on most phones. When in dark room, you don't need the backlight at full.

Plasma and AMOLED screens differ from LCD's as the pixels in them actually create the light. You actually get better battery life on AMOLED devices when using dark theme etc.

Re: N900 battery life
 

hi koivjann,

Thanks for the explanation, i'm not a normal user, i was checked my email/browsing every 5 to 10mins, 99% my life communications all depends on phone coz i'm always mobile.

Re: N900 battery life
 

Wow sounds like you are very demanding on the battery. I am interested to know what your current mobile device is that can keep up with your demanding needs.

Re: N900 battery life
 

The Nokia E71 can handle that use case absolutely no problem. It will last the whole day and perhaps half of the second day too.

For example, on 3g using Nokia email with constant connection, 9am -> midnight will loose about 30%-40% battery. With Edge, loose about 20% battery. I still don't understand why Nokia couldn't squeeze in the same battery but made space to hold the sylus!

I would be really curious to know how the n900 compares with E71 with similar usage (e.g constant email, always on IM etc etc)

Re: N900 battery life
 

I am not sure-- he seemed to imply that 14 to 16 hours of heavy use was not enough for him. So I wanted to know what his device was since it seemed unusual.

Wow the E71 gives you 14-16 hours of "heavy use" I truly am amazed. To me heavy use means browsing over 3g and multi-media, and listening to internet music. Not just checking your email once every hours or two.

Re: N900 battery life
 

Yes, the E71 can give you 14-16 hours "heavy use" 3G browsing, internet music, email. The E72 is supposed to be 15% better and also longer battery for playing music. The screen is only 2.4 inch though so its tough to do a comparison unless it involves limited screen (checking emails, music, IM online but not much chat etc)

I truely believe it (E71 or E72) is the longest lasting smartphone(with keyboard) in terms of battery usage on the market. Period.

Re: N900 battery life
 

i'm nokia fan, i was using communicator for many generations, after a while i jump into win mobile 3, keep on hangs, threw it and tried HTC but very dissapointed with the battery, i was changed to iphone 3g, also a same problem, i threw it and replaced with e71, i'm happy with that and thinking to change N900, hope this phone can me happy ;)

Re: N900 battery life
 

While this is partial true, there's also the fact that in a LCD only pixels with a color variation have electrical current running to them, anytime there is a true black color( 0 0 0) on a TFT LCD there would also be no electrical current entering the Liquid Crystal layer anywhere there is black to realign the pixels and the more True Black pixels per row the more energy savings you see. Though the power saving from that would be negligible.

Re: N900 battery life
 

Interestingly, it appears that battery life of the N900 is reduced without a SIM card. This may explain the disconnect between what I'm experiencing with my N900 and what others are seeing.

Re: N900 battery life
 

From that link, igor says:Hopefully this will be fixed, as I imagine some people will want to run this SIM-free.

Battery life on 3G mobile networks?
 

Hi,

I've read in several places that the battery is drained more quickly on 3G than on Wi-Fi, and several people say they don't use the 3G so much because they use their home Wi-Fi, or free Wi-Fi hot spots. (If you can find them! There are hardly any where I live, everyone uses WPA).

But what I couldn't get from any of the many messages about it is this:

Is that battery drain from just being connected to a 3G mobile network, or is that active use, sending and receiving lots of data, e.g. for web browsing?

When people say they are "not using 3G when they're in Wi-Fi range, so the battery lasts longer", does that mean leaving the mobile network completely (so you can't receive incoming calls), switching to 2G, or staying online on 3G/HSPA but without using packet data?

And if the battery life is good when on the 3G voice/SMS network, but not actively using packet data, but significantly poorer when packet data connection is active, does that forbid applications like IMAP IDLE (push email), Skype and IM, or can they be made to work while letting the packet data connection go inactive, as long as you're not sending anything and nobody is sending you anything at the time? (Even if you had to use a proxy server to change protocols - any method would be fine. I write proxies for fun ;-)

I ask because the Three network in the UK (and maybe elsewhere?) does not provide even voice service over 2G. You must use the 3G voice/SMS connection to receive calls and messages.

Well, actually you can connect over 2G, but if you do it consistently, they'll block the handset because they handle 2G using a partner network. Their own network is 3G only.

I'm a bit worried that if I'm on a trip for a couple of days without power, and I disable all data applications, I might still drain the battery "quicker than using Wi-Fi" (implied by many articles) just from being connected to the 3G network enough to receive incoming calls and SMS notifications.

So if someone could clarify if the battery life is good when not using packet data, but registered on the 3G voice/SMS network, I'd be most grateful. Thanks :-)

(I distinguish "packet data connection" from "on the 3G network" because Symbian phones seem to).

If someone tells me that the battery life is good even when running mostly idle IMs/Skype, having mostly idle online presence, that'd be extra nice :-)

If online presence requires packet data connection, but there is some hack whereby that can be avoided if you're almost never sending and receiving packets - after all, you can receive SMS notifications without a packet data connection - that would be rather interesting.