seriously thinking that i may have to knock an app together to turn a few things off, drop the brightnees, or even just lie.

bang it on the app store for 5 quid. there may be some fools out there who are easily parted....

either that or get some shoulder harnesses for carrying 12v batteries about with a car charger built in.

edit: never underestimate thwe power of google.
http://www.cluson.co.uk/productsMain.aspx?CI_ID=275

12v 7 amp battery in a canvas bag with shoulder strap and a car cigerette lighte socker for plugging in a car charger. That puppy should run the N900 for a few days...