the spec on that Mooer power bank says it has a max 2A output, how is it powering the QC when it needs 3A @ 12V?
I’m still waiting for my QC, but I suspect you can run this with a Palmer WT PB40 on a Palmer PB40. It has a 12V 2A output and two other 500mA outputs that you can switch to 12V. With two currentdoubler cables, that should be enough.