Tom, regarding the pi shutdown issue, take a look at the LiFePo4wered Pi UPS hats. I use them on most of my Pis and they work great. I have also used the UPS PIco devices. These are more sophisticated but are exactly what’s needed in a vehicle as they take 12V directly.
Tom, regarding the pi shutdown issue, take a look at the LiFePo4wered Pi UPS hats. I use them on most of my Pis and they work great. I have also used the UPS PIco devices. These are more sophisticated but are exactly what’s needed in a vehicle as they take 12V directly.
https://lifepo4wered.com/lifepo4wered-pi+.html
https://www.pishop.us/product/ups-pico-uninterruptible-power-supply-i2c-control-hat/