I just want to confirm that Rawpower 27000mAh can power Elektron trinity mk2
for about 70min
https://www.ravpower.com/ravpower-27000-external-battery-charger-AC-Outlet-black.html
the only issue is that sometimes the battery refuses to powerup, so I have to disconnect all the adapters and plug them one by one.
here is the little snippet of my live set with this battery: