Wio LTE Cat M1/NB-IoT powering down seemingly randomly

Hello! I’m new to IOT as well as to electronics in general, so I apologize if this is a simple/silly question.

I’ve had my Wio LTE Cat M1/NB-IoT board from the Twilio kit for about a month now and had been using code from sourd.io with thingspeak. Everything had been working fine up until about last week, when the board started randomly powering down. The amount of time before the board shuts down is variable, but usually 30s-5min. I’ve tested the battery and can’t find any issue with it, this happens on USB power too. I’ve tried different sensors and run sample code and the board still shuts off. I’ve been trying to find people troubleshooting similar issues on this forum/the internet in general and haven’t been able to find anything, and I’m just not sure what to do next.

Thanks in advance for any help!

What happens when the power goes off? The power lights aren’t working?

If it turns off when its plugged in with usb, the RST button starts flashing. If I press the RST button it comes back on. With a battery plugged in (charged and powers my seeeduino boards with no problem) it powers off and all of the lights turn off. I can turn it back on by holding the power button.
With both, after it comes on it connects to the network and sends off a few sensor readings before powering down again.

I have the same issue, I load up the AT_bypass example and am able to type a few commands before the device seems to crash.
Mine is also from a Twilio kit.

I’ve determined (at least for mine) that the Ublox sara module is turning off and not the board itself.

Interesting…how could you tell it was the Ublox?