Raspberry Pi shuts down on intensive task

I am using the PiPower v2 with external batteries. I am using the Raspberry pi to run a simple automatic speech recognition model, however whenever I attempt to do it, the raspberry pi turns off. This is not an issue when I connect the power for the raspberry pi directly using a cable and not through pipower. can I resolve this?

1.Please provide us with the video of the issue so that we can analyze and help resolve the problem.
2.Is your automatic speech recognition model connected to a Raspberry Pi? Do you have any idea about the operating voltage and current of this module?
3.What’s the battery specifications you are currently using?