Originally Posted by
hhnngg1
Most accounts of use of GPS-apps on the iphone (like runkeeper), report near completely battery drain after an hour of use when recording data points as a Garmin would. An hour is really short to begin with, but then add the fact that you've now drained your phone to near zero, and you can see why it hasn't taken on broad appeal.
I have used my iPhone 4 with Runkeeper for up to 3 hour rides playing my iPod continuously and at the end of the ride, my battery life inidcator is not even 1/4 drained. Anyone claiming only one hour use has another problem unrelated to the app, as I rarely ride for less than 1 hour, always use my phone, and have never had the battery come even close to draining. At the end of most rides, it is still essentially showing full power.