Good news, everybody!
No, this isn't Futurama, but sometimes I think it should be. There are wonderful things happening in the tech world in recent years, wonderful things that stagger the mind.
Even the small stuff is really, really cool!
In my presentation, I mentioned that the PD trigger boards I use for my "magic cables" can't help with non-PD power banks that have "QC", or Qualcomm Quick-Charge protocol instead. I proposed that it be the topic of yet another article, and that someone else interested in it might want to write it. Well, I take that back.
Because this is my article for just that!
It started right up. Turning on the external speaker, the 80m CW segment blasting from it. It works quite nicely! I haven't done any stress testing or timed operations, but it appears to work just fine. There are some very new versions of QC that will provide up to 22V if the source will deliver it, but 12V is a common top voltage for such applications. Some will go from 3v to 22V in .2v increments. I'm concentrating on the ability to supply 12V for the majority of QRP CW transceivers. I haven't seen a battery bank that supplies more than 12V under QC, because most QC power banks use USB-A sockets, and those are not rated for higher voltages.
There are a LOT of power banks out there that don't support Power Delivery, but DO support Quick-Charge. These cables and boards will support QC 2.0 through QC 4.0, being forward compatible. As with PD, the power bank has to support the voltage you want, and some do not have 12 volts available, so you won't be able to use that power bank with these cables on 12v radios. If the top voltage it provides is 9v, you CAN get a 9v cable or board, and use it with a radio that will run off 9v, such as my QCX.
So if you don't want to buy new PD power banks to take advantage of this option, check the ones you have to see if they have Qualcomm Quick-Charge at 12v. You may find that the old 10Ah power bank you bought for your phone supports QC, since it is an older protocol, and you'll be able to use it on your radios with this cable or the separate board and your own wire.
JacobsParts USB-A QC - 12v/1.5A 5.5x2.5mm coaxial plug: https://www.amazon.com/gp/product/B08NRM8M35
UxCell 5.5x2.5mm female to 5.5x2.1mm male adapter: https://www.amazon.com/gp/product/B07FB13JP1
JacobsParts USB-A QC - 12v/1.5A fixed voltage trigger board: https://www.amazon.com/gp/product/B08NFK8BPP (other voltages available)