I have a similar problem. N900 charged over night, got unplugged this morning 4am and I went off to work with it. Listened to some music (starting at around 5am). Around 6:30 I noticed my battery went down to nearly 50%. I did nothing else than listening to MP3s with the headset. Something I often use my N900 for, there have never been such an impressive power drain. I checked if I had any applications open, but it was only the media player for MP3.

Anyways, I pressed the power button, selected "Offline" mode and hoped the drain might stop. But that didn't do the trick, around 7:30am I stopped MP3 listening, battery was down to almost 20%. I closed the player, remained offline but after another 30 or 45 minutes the battery low sound catched my ears, battery down to 10%.

I got back online to make a last phonecall, which didn't even last four minutes (three at best!) before the phone shut down. Too bad today was the first day where I even forgot my power-charger at home... so no phone or communication for me.


So basicly my N900 managed "impressive" five and half hour battery life today, under medium use at best. Under similar conditions, it usually lasted around 10-12 hours.

My phone is currently recharging, but I updated to the new firmware yesterday evening, so I guess it might be a problem related to the update.