If I got the theory correctly, the minimum PD delivery wattage for a powerbank needs to be voltage x amps for the device in question, in Syntakt’s case that’s 12V x 2A = 24W.
Is that sufficient? Can you go lower than that? There seem to be many PD-compatible powerbanks that output up to 20W on the usb-c port. Will that cut it too close for the Syntakt or is the 12V/2A spec a bit of an exaggeration to be on the safe side? Has anyone tried with a 20W powerbank and can you confirm if that works with a 12V birdcord?