Harmless. When buying an electric kettle, be sure to buy an electric kettle with qualified quality. There are many kinds of electric kettles on the market, so you must learn to choose when you buy them. Don't choose an electric kettle with poor quality and unqualified quality because you are greedy for cheap. The manganese and other elements in this electric kettle may be at risk of exceeding the standard. Drinking the water boiled in this kettle is harmful to your health.

The scale in the electric kettle should be cleaned frequently. The electric kettle has been used for a long time, and it is easy to have scale inside. These white scales are mainly calcium and magnesium, which will not affect health when drinking. However, if the scale is not cleaned for a long time, it will be very nutritious for the kettle and its service life will be shortened.

Don't fill the electric kettle with water when it is boiling. Water will boil when it is boiled. If the water in the kettle is too full, it will overflow to the chassis after boiling, which will easily burn the chassis in time, which will not only shorten the service life of the electric kettle, but also cause certain safety hazards.

It is not good to boil water repeatedly. Repeated combustion for a long time may evaporate a lot of water, so that the residual water contains high concentration of water impurities, which is not good for the health.