Hi Michal and
to the forum.
The default current setting for the
Magic Pie Edge is
21 Amps (Smart Pies are 15-18 Amps and Magic Pies are typically 25 Amps), but you should be able to increase it provided you don't overload it too much on long steep hills.
My Smart Pie is currently set to 30 Amps, but it can get quite warm on steeper hills and has even cut out completely when my wife made it work too hard for too long, and she then had to wait for the motor and controller to cool down before the throttle would work again.
Alan