I put the Lacroix Lonestar to the test with an approx. 2,000' climb in Vail. The Lacroix gobbled it up like a snack. Its a beast! Went down the same way I went up and still had a 80% charge. But my body charge only had 20% left. Missed turn at 12:39 delayed me a bit. Almost caught an Uber for the ride back down. But I sucked it up and coasted down. :)~