_No_ charger will overcharge the battery. The difference between USB charging and power socket charger is simply that USB charging may limit you to 500mA while the power outlet charger can push up to 1.2A. So it's faster.

1) thats really bad, there should be some check in the firmware for 100% load and kill the instance if there is no 'improvement/progress'.
almost like firefox (asks) for a website that is not progressing, that seems to work quite the same way.
2) I do not have a SD card installed.
3) I know its a small laptop, and therefor I like it very very much! :-)
though I was not really really using the device as I explained, however the internet connection was enabled. Its insanity to disable it en enable it every time you decide to use it... If not used it should not be sending a lot of data and stuff to keep it 'alive' and therefor it should not drain that much in my opinion.

I've had 3 HTC's before and as much as you could say for instability of these devices, the battery was great.
I could play around with them all day, run apps and stuff.
The battery for a HTC usually is like 10% of the device measures, in stead of the 2% or something from the N900.
However I'll NEVER turn back to HTC as crappy as the devices are! :s
hardware breakdowns/broken styluses without any good reason etc etc.
my N900 is COOOOL (or rather HOT, when taking such battery power...)

with all due respect: I CANT WAIT FOR 2012!!!! :P
Hopefully by then I'll have a Nokia N9000 running Maemo 7 or something
Besides of that it may be the end of the world (or a new beginning ) according to the mayans, maybe the beginning of real battery life improvement haha

Today, to do a test I've loaded the battery full again.

I've made some SIP calls, had a MSN conversation and the battery still shows all blocks!...

I'm disconnecting wifi and put msn/skype/sip offline every time I lock my screen again.

at same time yesterday with wifi on and the chat/voip accounts logged in all time it was down to 1 or 2 blocks already.

CONCLUSION:
either way. setting this manually every time is not really a option.
can't there be some build in option that closes the wifi connection and switches to 3g or even 2G to save bat. when 'locking the screen' and optionally log off msn/skype? :-)

PS: I've basic knowledge of c++ and will look into programming for n900 soon if I have more time, but I guess i will have to start with hello screen as I have no knowledge of linux and needed reps etc etc. haha

hey guys is this a Genuine Nokia battery?
http://cgi.ebay.com/NOKIA-BL-5J-5800...a9d07c981#shId

its in package and have the hologram

Hey, I whould not trust it really if it comes from Singapore and is THAT cheap.... normal price should be about US $25.00 ?
In europe (well everything seems more expensive here the cheapest is about 20 euro!

it sais 100% nokia bat. the one in the picture seems real yeah,
but I guess if you were to order it you might get a clone.

"poor quality battery, but seller quickly issued full refund, so all ok overall." was a feedback...
Not sure but just a first feeling and experience from ordering from foreign countries haha.

hahah i'll stay safe then. First gotta wait and see how my N900 performing with the battery. Else I'll get a genuine battery one as spare in NZ but it is ripped off here $40-50NZD.

Really hope to get my hands on the N900 real soon (Friday).

I'd do the same thing, better to spend a little more then to be disappointed or even worse: a battery that explodes, whould be the first time...
[QUOTE=Really hope to get my hands on the N900 real soon (Friday).[/QUOTE]

I don't think you will be disappointed! As long as you keep the WIFI off when not needed ;-)
That was the only minus I could find on the whole phone. I really LOVE the device :-)
I guess there will be a fix soon for the wifi that, lets hope so!

I thought I'd share my contribution to this thread; my battery lifetime doubled when I removed the original Calendar-widget from homescreen.

I can repeat the bug by putting the widget back to homescreen.

If I have the widget on, my battery will be drained to empty in 6-9 hours and if I have the widget turned off, the battery will easily go from 12 to 24 hours.

And what connections did you have on? was that with wifi/3g? and your battery still doubled?

I'm running out of options besides replacing the battery or getting a new n900 which is just about impossible right now. Here is my setup..

Off the charger at 6 a.m. fully charged
Brand new SIM card
GPS completely off
Bluetooth completely off
Network mode set to GSM
Screen brightness set on lowest
Backlight timeout set to 30 seconds
Always connected to T-Mobile. Wifi set to manual, search interval set to never. Not connected to wifi at all during the day
2 desktops: 1 with facebook, calendar, media player widgets and 2 contact shortcuts. The other with nothing but shortcuts and 2 bookmarks
2 email accounts set to poll every 30 minutes
Mail 4 Exchange set to manually synchronize contacts, calendar

Usually web browsing on EDGE for a total of 1.5 hours
Maybe play 30 minutes of media

Dead by 4 p.m.

I've reflashed more than once and ran with no extras-devel apps with marginal improvement

My signal strength isnt great but I should be getting better battery life even with idle. I've pretty much scaled back the intended use of the n900. Even with light use I have yet to break more than 12 hours on a full charge.

Also, how accurate is the battery information from running "lshal | grep battery"? This morning after coming off the charger and only installing 3 updates, my battery looks full, but my percentage says 86%.

Anymore tips would be greatly appreciated.

Thanks