Techniques to control a utility vehicle involve initially setting a maximum speed constraint imposed on the utility vehicle to an initial value. Such techniques further involve receiving a state of charge signal that indicates a current state of charge of a lithium battery which provides electric power for utility vehicle propulsion. Such techniques further involve, based on the state of charge signal that indicates the current state of charge of the lithium battery, adjusting the maximum speed constraint imposed on the utility vehicle from the initial value to an adjusted value that is different from the initial value.