Charging electric vehicles can be done through various methods like Level 1, Level 2, and DC fast charging. Level 1 uses a standard 120V outlet while Level 2 uses a 240V outlet, providing faster charging. DC fast charging uses direct current to charge over 80 miles of range in 30 minutes. Wireless charging systems allow charging through induction coils in static parking spots or while driving on special roadways. Battery swapping provides an alternative to charging by exchanging depleted batteries for fully charged ones. Vehicle-to-grid technology enables electric vehicles to export stored energy back to the power grid. Battery management systems monitor battery health and safety through functions like temperature regulation, voltage balancing between cells, and protection from overcharging.