Mileage on New set of Deka 8G31 at 35m/h

Would like to know what kind of distance you get on a full charge at 35 miles per hour and what kind of batteries you are using

Just installed those batteries, I’m getting less than 20 miles - having said that, I installed a new 7.5V motor, which eats up the charge quicker than the 5V original GEM motor.

I would expect 14 to 15 at 35 MPH