1. charging treasure pd is a power transmission protocol, whose full name is USB power transmission. It is a fast charging specification formulated by USB-IF and one of the mainstream fast charging protocols at present. 2. If you want to charge faster, choose the PD protocol port of the charging treasure, but the device may have obvious heat. At the same time, the percentage of mobile phone power drop will be faster than general charging. The so-called fast charge is forced fast charge, so it is normal for a fever to damage the battery. 3. From the point of view of battery maintenance, it is suggested to choose IQ automatic matching current. At the same time, shallow discharge and shallow charge can slow down the capacity decay rate of the battery. Degree. 4.IQ refers to intelligent identification, identification of charging connection equipment and adjustment of output current. QC is a fast charging protocol in Qualcomm, also known as QuickCharge, led by Qualcomm. Fast charging technology. 5. The purpose of promoting PD by USB-IF is to unify the fast charging protocol. Judging from the market changes, it is also developing in this direction. Qualcomm QC4.0 protocol and MTK3.0 protocol both adopt the PHY layer design of PD3.0, but it can be predicted that it will take at least 2-3 years from the existence of various protocols to their unification, during which the various protocols are still matched. The mainstream of market development, and among many agreements, PD agreement will be a hard indicator for customers.