I was just thinking about this exact use case yesterday:

And it's for me measuring different charged speeds at different starting battery capacities and different temperatures and I was like well. What if I just had a video camera pointing at the voltage going in and out and then I could see the battery percentage increase and I can have a temperature gun pointed at the phone as well. And I couldn't know what temperature of the phone is as well and it could just figure it all out create charts..

This would make reviewing different charging equipment really easy as long as you really have to do is plug it in and tell other people to do the same thing and take a video of it and beat it to the system.

I might very well give this a try!

It's kind of wild how much we are abandoning basic problem solving skills in favor of just pointing an enormous stack of GPUs at it