12-13 hours is pretty good for browsing the web alot and playing video with GPS usage. Battery life should last around a day for what I would use it for.

Actually, with a lot of web and video and GPS? That's REALLY good :P

Having used a Cortex A8 device (3gs) for some time and reading a lot about Palm Pre's battery issues (also a cortex a8 device), it seems to me that the N900's battery life will be INSANELY GOOD compared to those two

This is very encouraging indeed..

Off topic:
this is for the MOD guys, how come I have to search for the post that I have posted to get back to it? isn't there a way you can put reply to my post or something similar under the new post? easy to navigate the site around in my IMHO.
Sorry I just did not wanted to create a whole new thread for this little thing.
If Mods want to they can move my post.

According to this Russian review. Sept 10.

http://mobile.mail.ru/reviews/nokia/...aemo5-rev.html

Translated from Russian. Seems to imply half day usage with medium use, but could also be a translation error. Just gives us an idea with whatever firmware they were using and if it was mainly on wifi or 3G.

"
In the Nokia N900 uses BL-5J battery capacity of 1320 mA * h, that is exactly the same as in 5800. It would seem that the size of a smartphone allows you to put bigger battery, but it's probably just an impression. Whatever it was, N900 is relatively little affected by a robust hardware platform. One day in active use, and a half at medium loads, do not count on more. Nevertheless, in some modes, power consumption is optimized, it concerns video playback, MP3 and some others, the exact figures will be in the final material as long as their result meaningless, many parameters will be optimized.

"....

I find this Google Translate very useful. CLICK HERE to see the translated English version.

OK that doesn't make sense (it's translation). So... I'm going to be optimistic and say "full day extremely heavy use as it's using a 1320 mah li-ion nuclear fusion powered cell" LOL.

Most of the posts here seem to be related to usage on a standard day of web/video access etc. How about it if was mainly being used for an audio player. I plan to take some trips to other countries and currently bring an ipod 80GB on the plane to listen to some tunes if the movies are bad or for while im sleeping.

Does anyone have some insight into how long they would expect the battery to last with just audio playing (Wifi/GPS/Phone OFF). One could expect vastly more than the 10-12 hours with wlan etc right?

Any info for that would be helpful thanks.

I would assume so. As is, the nx00 already lasted quite a while in the mode you described. But then again the n900 is using a smaller battery (Though one would assume that they have optimized the battery usage even more).

Also satisfied about that. My E71 with e-mail and RSS (both auto syncing) can run for about 1,5 days if I don't use the LCD too much (don't also surf too much). But I charge it every night... and that is the acceptable performance for me: needing to charge it every day with average usage.

[quote]The difference is less than 200 mA.

Imagine this: video is rendering and showing on LCD screen the video and playing the audio.

Playing a MP3 doesn't cost much resources. A P1/200 MHz can easily play MP3s of good quality since a 80486 can play 128 kbit MP3.

From my experience with MP3 players it depends on how often you're going to use the LCD screen and how bright it is. A remote which is informative and usable but doesn't use LCD screen can improve the operational lifetime of your device, even if that remote uses e.g. BlueTooth.

OTOH because the device doesn't rest it won't get into deep sleep mode. So this will count as 'medium usage' at worst. Take into account most people have something running on background on N900. Such as e-mail synchronisation.