I use this pump before rides to top off air in my tubeless tires. It typically lasts for 2 days between charges (about 4 fills of a 28mm tire from 55 to 70 lbs). I took it on an international flight with no problems - and it worked well throughout a weeklong trip. I like it; however, it is just a bit too bulky to carry in a saddle bike bag, or pocket. Hence a 4 and not 5-star rating.
