Electric Scooter - How To Get The Best Range?



Hi, I am trying to work out how to specify an electric motor sit-on scooter purely to get the very best range between charges with a performance that works ok travelling around town so it handles inclines ok.

So if the battery options are either 48v 20Ah or 60v 20Ah, and the motor can be anything from 500w to 3000w, what combination would you recommend and with what controller to get the best range and performance? A mentioned its the range between charges that I'm most keen on.

Any thoughts would be welcome!