Why are there so many fast charging standards, and what's the difference between them?

📋总体概括

文章梳理USB-C快充标准乱象：因厂商各自推行私有协议，加上PD、QC等公共标准并存，导致功率、兼容性差异巨大，消费者选购充电器和线材时容易踩坑，并解释了各标准之间的区别与兼容情况。