Most Stable Recording Method

[Egastelump]

I'm planning on doing a 100K piece and I'd love to record all stroke data.
What is the best method to do so? I have a PM4. it's probably going to be around 8 hours and there's no way my phone (ErgData) is going to stay up for that long due to battery limitations.
A couple of weeks ago I did an FM, I decided to use my log card. The safest way of recording I knew.
As many of you might have expected, the log card did not create a FIT nor TCX aka it didn't create a file that I could export to other platforms as ErgData does. I was explained by support it was due to the log card basically saving only a summary of the stroke data. That's a bummer since my goal was to export the piece to Strava.

Have any of you used your laptop with a third party software and been able to share the piece across platforms? Is RowPro stable enough for 8 hours of continuous recording?

[boomingaway]

Why not just charge your phone while rowing?

[mitchel674]

Why not just charge your phone while rowing?

LIkely using the PM4 with a cable attached to his phone for ergdata and cannot charge at the same time.

[Citroen]

With a USB Y-cable you can charge both the phone and the PM4. USB has a common GND & 5V.

[Egastelump]

Thank you for the ideas guys