I got some battery numbers from a quick 1min test run with a full battery. I will go on a ride around 5 miles today to the middle school and back to play football. Freshman vs Sophmores.
My 24v 12ah pbs started at 25v.
Top speed was an even 18mph.
Under hard acceleration voltage dropped to around 15v.
During full throttle crusing (~17mph) voltage was around 20.
With a nice 6s lipo I would hope to be around 18-20v under hard acceleration and around nominal on crusing.