Other Parts Discussed in Thread: CC2650STK
My question is about the humidity sensor on CC2650STK board. We used the CC2650STK gerbers to make a board and only populated external flash, humidity and light. The boards have been running for couple months with CR2032 batteries. I then removed CR2032 and connected CR2477 battery with wires to BAT+ and BAT- terminals from assembly bottom. They have been running fine for a month or so. This time I connected CR2477 wire leads to assembly top and now I have boards that increasingly draw current until they short with irreversible damage in couple days.
I have a post in BLE forum about this: https://e2e.ti.com/support/wireless_connectivity/bluetooth_low_energy/f/538/t/601502
Since the humidity sensor is between these terminals could the soldering or wires somehow trigger a higher current draw eventually damaging the PCB trace? Is this possible?