10-08-2020, 01:35 AM
usb charging starts with the devices sending signals down different wires to negotiate a highest compatible charging rate. most phones only support 5v and vary the amperage. thats the usb spec. some manufacturers raise the voltage but that diverges from the usb spec so they give it some branded name like fastcharge technology or whatever corporate buzz sounds good to them.
your charger supports only 3A and varies the voltage so if it fails to negotiate a charging rate the first time according to spec it fails
your charger supports only 3A and varies the voltage so if it fails to negotiate a charging rate the first time according to spec it fails
