Hello,
I have two kits xiao nRF52840(not Sense version). And I’m trying to create a battery powered application and my board won’t boot up after connecting the battery. I have checked the voltage at the input to the board from the battery and I see 3.8V on it, but the board draws 15mA pulse and won’t boot. Then when I connect to the board via USB, it looks like the program has disappeared from the board because it won’t start even from USB. When I subsequently reload the application via USB, it starts and if I have the battery connected and disconnect the USB, the board continues to run, but if I disconnect the battery and reconnect it, the board does not start and the program disappears from the board.
When I have connected battery, I can measure 3V3 on 3V3 pin.