Controller adjustment is performed only by an authorized Sparrow dealer. The
controller is adjusted at the factory for moderate performance in acceleration
and range.
However, if you know that you will be driving up hills, for example, you may
want to have your controller turned up to a higher performance value. Similarly,
if you know that you will be driving mostly on level ground, you may want your
controller turned down. Less electricity will be used so your driving range
increases.
Remember, a new Sparrow consumes more electricity even when not climbing
hills, so you'll have less range in the beginning