Conventional smart water meters use a built-in lithium battery when controlling the opening or closing of the water valve. After the lithium battery has been used for a certain period of time, it cannot supply energy to the control circuit and has to replace the battery. It is ...
At present, with the increasingly intelligent function of electric meters, long-term data storage and display functions are indispensable. Many electric meters use various batteries to supply power to the clock chip and power-off protection. At present, supercapacitors can ...