Yes, I tried yesterday, and when the magnet is there, camera doesn't work anymore because then N900 thinks the lens cover is shut. It needs that white reflecting patch also. Rather interesting design I must say. Separate battery door would be so much better considering this is a geekphone and everyone eventually needs a bigger battery.

Well, I am using now anyway this Mugen 2400 mAh battery to see how it performs. I try to manage without the microMMC now until they send a new back cover. So far (after 16h use) seems pretty good. Chargelevel bars have gone down from 8 to 6. I will get back with this after weekend when I prolly will post some BatteryGraph snapshots.