Why should a prepaid electric meter be installed in the charging pile?

The reasons for installing prepaid meters on charging piles are as follows:

I want to buy single-phase and three-phase prepaid meters for testing. Through the time control and payment control functions of prepaid electric meters, the purpose of charging with charging piles by many people is realized.

Charging piles have similar functions to gas station tankers, and can be fixed on the ground or wall and installed in public buildings (public buildings, shopping malls, public parking lots, etc.). ) and parking lots or charging stations in residential areas, and can charge all kinds of electric vehicles according to different voltage levels.