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Some tweaking of my heated glove power source. The square controllers are finicky with the USB 9V setup. I was also a bit concerned the big dongle I made to get 9V could damage the power bank port. The USB C PD board is tiny but I need to use a gender changer which doubles its length.
New setup uses a short USB C cable connected to a USB C PD board attached to a PWM motor controller. Since both gloves together come in under the 2.2A 9V limit for the power bank I'll just power both off 1 battery. Had to make one lead a little longer to cross over to the extension cable that goes down the sleeve of my jacket. Since this controller has no processor it will never accidentally get reset and turned off while I'm using it.