If I have a device that requires 5V and 2A to function, what kind of power supply would I need to power 4 of these devices at the same time to their full capacity?
Here is an example setup: Power bank-Portable Charger 30000mAh 2USB Ports (Output 5.0V 2.0A)
===================================================================== Based on this battery, im pretty sure the portable battery must be able to at-least give off a total of 8 amps.. ZeroLemon ToughJuice 30000mAh 7A Output Portable Charger t
But im willing to bet it needs more than that to maintain that sort of power for over two hours. I wonder if a USB hub can handle 4 amps in a single cable...