This is normal! Your device is just automatically adjusting the wattage to either achieve, or not exceed the set temperature you have selected. Just think of it as cruise control for you device. Temperature control mode is the only time the wattage should be jumping around though. If it is jumping around in normal wattage mode, we recommend contacting the returns department to determine if a return is necessary.
To get in touch with our returns department feel free to email us at Returns@Mtbakervapor.com