I've found a few times that I've run out of juice for some of the gadgets in my bag at a time when I really needed them - and had no charger or even a poweroutlet nearby.

Anyone have any experience using low-cost solutions like these (for N810):

(And yes, I'm also looking at getting, and bringing a spare battery).

http://www.brookstone.com/igo-powerx...st1FDT|7209217

http://www.brookstone.com/Quick-Char...st1FDT|7912705