I know this gets asked a lot, but when I search I see most people saying the X2 has a decent battery life.
I just got mine yesterday, it was fully charged when I woke up at 7am. I brought it to work and used a GPS related app, something that tells me speed and all that, for the 31 mile commute. When I got to work the battery was about a quarter gone. By lunch it was half, and now it's telling me to plug the charger in after using it for a bit.
I turned off all GPS and wifi features later and know not to turn them on unless I really need them.
This seems pretty short to me, I know the ride in probably took a lot of juice and I likely won't be doing that again unless I have it charging in the car. Any other tips or comments for conserving battery?