I have 5.0V 3A and 5.2V 3A regulated supplies that I can repurpose for my Raspberry Pi 3B project. Am thinking of using the USB power jack. Which should I go with?
5.2V would seem to be within the specs but is there any benefit over 5.0V?
Raspberry Pi Stack Exchange is a question and answer site for users and developers of hardware and software for Raspberry Pi. It only takes a minute to sign up.Sign up to join this community
5.1 V is preferable if you are using a normal short cable. 5 Volt is good for a fast-charging cable. 5.2 V is good when you are using a poor quality of USB charger cable or a longer cable. The voltage is sometimes increased because there might be some losses through the cable. I gave you all the necessary information so far. You can now choose one easily.
Both voltages are tolerated by the Raspberry Pi 3B, but official documentation actually suggests 5.1V.
Higher voltages usually mean more power if the amperage is the same. Also a higher voltage might give a little more heat output, but 0.1V is very negligible.
I suggest using the 5.2V as some of it will be lost to the inefficiencies of cabling.