Where did you get that? How fast does it go? and of course, how long does it last.
These are the first question everyone asks once they get over the initial awe of being passed while going up hill at 20mph.
In this post, I’ll explain some of the factors that affect range, and go over the math to calculate your range. If you just want the quick answer I included a calculator to do the work for you based on your battery specs.