I have created a portable and want to upgrade the power circuit that I am currently using. I need something that can supply a decent amount of power and have come up with this setup:
Power Bank -> DC-DC Step Down -> Raspberry pi and other components.
I would want a power bank that allows me to use it and charge it at the same time. The portable runs on 5V and will need at least a 3-3.5A supply. Has anyone tried this or can verify that this set up would work? Also does anyone have suggestions for a power bank that has charge and play?