If you can solder and heat shrink then search for “usb c trigger board” on ebay and get some for like $5. They will request either 5v, 9v, 12v, 15v or 20v. I’ve found for most older battery powered barrel jack devices a voltage that is an little under spec works just fine. Ive convertered everything in my house and now own a nice USB PD battery bank, life is good.