I have used many alarm clocks, whether it is dry battery or mobile phone, they will always cause damage. BigToys water-powered alarm clock is environmentally friendly, healthy, energy-saving and interesting. It can advance the time by adding water. Water is the most abundant compound on earth. , representing about three-quarters of the world's surface area. The surface is covered with water, and everything has water. Next, let's take a look at the magic of the water element!
It is absurd to never turn off the power supply.
Adding water should provide electrolyte, which forms a primary battery with the plates positive and negative placed in the alarm clock. /p>
(Someone also bought one and found that it also had a coin cell battery inside, not sure if that's true or not)
The power consumption of the LCD screen is very low, so the energy of this reactionone should be sufficient
You can also refer to the principle of fruit piles.