At the first battery change requirement on my XC100 pedals, I learned that the battery door was siezed on the right pedal. No amount of effort was enough to unstick the battery door. Eventually the metal became stripped making the battery inaccessable. Now I'm left owning an expensive pair of pedals with no power sensor feature. Garmin rep responded too bad, so sad. From my reading of posts, seema this is a known defect with these pedals.
