Nicee 
When you build your own electric skateboard, you can choose your battery’s total voltage. The usual choice is 6S 22.2 volts, 8S 29.2 volts, 10S 37 volts and the most is a 12S 42 volts.
You can add more amps by using a better, more powerful battery. The most common rating for a standard motor has a maximum output per motor of 80 amps. You may not need this much on an electric board. This is a lot more than what riders need and usually, this will only leave you off your board and on the floor.
A set up with bigger motors and stronger batteries will give you more power so you can get higher wattage out of your motors. And although this is a very powerful motor, you might only injure yourself. 