Generally, charging piles can be used for 3 to 15 years. 1. The charging pile is fixed on the ground or wall, and installed in public buildings (public buildings, department stores, public parking lots, etc.).) and community parking lots or charging stations. Different voltage levels can charge various electric vehicles. The input of the charging pile is directly connected to the AC grid, and the output is equipped with a charging plug to charge the electric vehicle. 2. Charging piles generally provide two charging modes: normal charging and fast charging. People can use some charging cards to provide credit cards, man-machine interfaces, and corresponding charging modes, charging time and operating expenses, such as variable data printing. The charging pile screen can display data such as charging capacity, power consumption, and charging time.