Max amperage for motor ? batery amp size

[lincpimp]

The motor will only draw as much as it needs, gearing and vehicle weight will determine the load.

You can run as big of a battery as you like, only downside will be the weight.

Your 7xl is a hot motor, it will pull over 95 amps, the cc2200 motor is a much better choice. The 7xl is very gearing sensitive, and 5s is too much voltage for the motor, it will most likely suffer from a magnet failure. 7xl on 4s is about as much as I suggest.