- The main difference between these two types of electric kettles is that an automatic shutoff electric kettle will automatically turn off when it reaches the desired temperature, while a manual shutoff electric kettle requires you to manually turn it off. - An automatic shutoff electric kettle is more convenient because you don't have to worry about forgetting to turn it off, which could lead to the kettle boiling dry and damaging the appliance. - A manual shutoff electric kettle is more affordable than an automatic one.