for a fun project I am building a device with 108 WS2812b LEDs. A measurement of 36 LEDs showing bright white yielded 1.9 amps, which is in line with my previous calculations.
As I need the device to be portable, I obviously need some kind of battery. I have looked into LiPo batteries, but besides being pretty expensive, I do not like to carry around such dangerous stuff. Since there are USB power banks that supply 5V, I would like to use them. Many of them have 2 or 3 output ports. Can I just combine them by supplying 1/3 of my LEDs to one port and providing a common ground? Or do I need to add some other electronics? Besides, do you know of any USB-Powerbanks (or similar) that can supply 6A from a single port?
Thanks in advance Velines