i have the gs2 map my ride will work when it goes off. fuuny about map my ride though it doesnt record the same amount of mile both my comps do. part of my route takes me to a 3 lvl parking structure and i ride laps inside of it and the sats dont see me there haha . i just enter the number manually on the site when i get home
as far as battery life i have run mine for 3 hours no prob. i also picked up 2 spare batteries on amazon for cheap \M/\M/
that phone bag looks sweet. i keep my phone in a ziplock in a handlebar bag.