def set_max(self):
        """Set the charger to max range for trips."""
        if not self.__maxrange_state:
            data = self._controller.command(self._id, 'charge_max_range',
                                            wake_if_asleep=True)
            if data['response']['result']:
                self.__maxrange_state = True
            self.__manual_update_time = time.time()