I know that the RAK Wistrio Lora 5205 board can/should be powered by the USB port but I need to integrate it in a car where the input voltage is around 14V (using a step down converter from 14VDC to 5VDC) and also use a Li-Ion battery for safety. I think the USB connector is not enough resistant to car vibrations, so I was wondering if I could use the solar panel connector to power the board with an external stabilized 5 VDC?
I’ve seen in the documentation that we need to remove the J11 jumper, so the battery is charged by the solar panel (and not by USB) and I hope the board is also powered. Am I right? What happens if I connect my computer by USB for firmware updates? Do I need to change J11 jumper?
Also, what is the reference of the solar panel connector (JST) ?