Thanks @zander for all the ideas! Might order the PD specific Anker unit also. However results are in from the IQ Anker now:In a nutshell, it works b...

Shutting down the "labs" and experiments for the night. Phone was at 71% running hotspot all day long (few to no clients). The USB C car charger with ...

I've done some Googling since my last post. It seems (?) that IQ protocol is claimed to be compatible with PD. On the link you posted, if you hover o...

I bit the bullet and ordered a $129 unit of the brand you mentioned, Anker, model A1336. Seems like it is one of the most up-to-date, large Ah capacit...

Thanks for bouncing all these ideas around with me. Of all the challenges on this project, providing adequate power is not one I had foreseen. I am dr...

Sorry, I am not completely blind when connecting a phone to the USB C car charger. I can still see the watt meter built into the cable. Just not any d...

@zander Could be the case. I paid about $30 for this phone charger. Which is a fair chunk of change if it is faking it. I avoided the cheapos, and g...

@zander I have a similar device incorporated into a USB C cable. Even when Pi5 is on the car charger with USB C PD, the cable's watt meter never shows...

Test complete. I built a harness to use two 5v gpio pins and two gnd gpio pins. I supplied 5vdc to these pairs from a 10 amp, 36v to 5v, dc-dc convert...

Here is a discussion about powering the Pi 5 with the gpio pins, and a configuration change: Might be an approach for me to try with the 5v output d...

Link didn't work. But here is the description of it on Amazon: 120W Car Charger USB C for iPhone 15 Pro, JOYROOM 3 Port Super Fast Car Charger Adapte...

@zander I will look into powering the board via the pins on the 40pin header. It also has a 4 pin PoE connector. I will also explore that idea as wel...

@zander I certainly can use 18650s in a custom pack. I have them on hand, and a spot welder for tabs. I was trying to stick to the 36v packs from the...

@zander Yes, I am actually running two Pi 5s in the robot and a handful of ESP32s, Teensy, Pico etc. (all battery operated starting with a native 36vd...