Chargers typically have an input port where they can be connected to a power source. This could be a wall outlet, a USB port on a computer, or a car's cigarette lighter socket, depending on the type of charger.Chargers have one or more output ports where the device to be charged is connected. These output ports can vary in shape and size, such as USB-A, USB-C, Lightning, micro-USB, etc., depending on the type of charger and the devices it's intended to charge.