USB-C ports can be configured with 5V 1.5A and 3A for up to 15W of power, which is a bit quicker but still rather slow compared to other fast-charging standards. USB Promoters Group USB Power ...

USB 1.0 and 2.0 are both capable of delivering 5V at 0.5A, which works out to 2.5W. This is just about enough to charge small accessories like a pair of wireless earphones or a mouse. So the next ...