Not Just a Charging Port… How Do Phones and Chargers Negotiate Power?

CH23: Plugging a phone into a charger may seem like a simple process that involves nothing more than inserting the cable into the port and waiting for the battery percentage to rise. But behind this step, a rapid digital communication process takes place between the phone, charger and cable, involving the exchange of information about the available power, the power required and safety levels. With…