I love it when that happens.
The best part isn't that it actually works, and works as advertised (which IS nice), but it tells me my Epic Solar Boat Adventure might actually work.
I have 360w of solar, and it turns out my motor draws about that same amount of juice when running flat out.
Hopefully that means I can cruise for a few hours a day at speed 4 of 5 on a sunny day, and still end the day with a full battery in case of snake bite, internet use, phone use, wanting to shine floodlights into the eyes of the local wildlife in that way that we humans tend to enjoy... whatever.
In all these years, I've never really known how much power my trolling motor uses on full power. My multimeter couldn't handle the amperage my motor draws, so I only knew the values for the first 2 of 5 power settings.
Today is a happy day.
My trip is going ahead.
This stuff is going to work!
120 Things In 20 Years is a little surprised that the math(s) worked