Today I rode 21 miles on my XP and my battery was pretty much drained. The final voltage was about 41.8 to 42 and the power was super weak at that point. Now I think 21 miles is actually not too bad considering I weigh 195 lbs, rode a lot of steep hills, had about extra 10 lbs in my panniers, and mostly rode in PAS 3 about 60% of the time, PAS 2 30% of the time and and PAS 4 and 5 10% of the time. Also occasionally riding against the wind. Using All Trails app my elevation gains was 1,286. Just wanted to let those who are interested in this bike know what the battery is capable of in higher PAS levels and steep hilly areas.