“This PSU is required to get the most out of the Pi 5.
It is cheap enough, you can even use it on a mobile phone, though it will only be recognised as a fast charger.”
“Great value. Although it supports >5V, the Pi 5 can't negotiate higher voltages, but it means this is also a great phone / tablet rapid charger.
Strongly recommended for use with the Pi 5 which requires 5A at 5V in order for the USB sockets to be able to deliver full current to peripherals.”