I'm not an electrical engineer so apologies for the rather basic question. I've found myself with multiple pi's and felt it was about time to look for some other power solutions other than powering each one with its own adaptor.
From what I understand the pi 3 model b needs 5V and 2.5A. Now I don't know how to read the specifications on USB chargers so I found this one PowerPort+ by Anker which says output 5V and 2.4A per port.
I also found some other ones which says 2.4A per port or 4.4A max. I don't understand what the max means. Does it mean you can connect one device to 2 or more ports to give it a higher current (A)?
Would any of these work?
Also, what would happen if the port has more than 2.5A?
I'm also trying to avoid using the GPIO ports because the pi site says that the protection is in the USB port.