I just bought the sense 8+ powerbank ROMOSS.
First I powered my nano through micro B USB. It was fine until I missplaced the output of my powerbank to 3A 5V. Now I believe that the micro USB B port is dead or a component nearby (resistance, condo…).
So I bought a cable for the powerjack input. Unfortunately i can’t power it. The green led briefly switch on and off.
Technical param of ROMOSS : https://imgur.com/UsTzczt
I guess it should be 5V 4A but I thought it could be possible with 3A (4A MAX).