Thank y for answer
I need ebike only for 2km up hill, I dont need it for anything else
I do not understand why 4x 11.1V 1.8Ah 3S 45C battery cannot be used to travel 2km
https://www.gearbest.com/battery/pp_795515.html?wid=1433363
44.4V x 1.8Ah = 80W
45C can output 81A or more than 30A...