I think that the OPs intention was to learn something about generators and to experiment a little bit.
However, his video at the start of this thread goes nowhere to explaining what he is doing or why.
I agree. I have no issue with anyone wanting to build something themselves just to get familiar with how the concept of the design works or just for the fun of it. I do it near daily.
What I have trouble with is when someone claims they want to refine some concept yet gives every indication they have near zero practical knowledge of any part of what it is they are working with or to what their actual start and end points are either.
Then as the OP used, some archaic and largely irrelevant historical reference (most often to what is now a well understood and common knowledge in the related field) as if it's suposed to justify whatever it is they are doing to imply their work is going to be some world revolutionizing concept as was done here.
The two things I see here is either the OP wants to run a common line voltage powered LED light off of a common ~3.6 volt lithium based battery set, easily and efficiently done with a tiny SMPS based converter circuit, or he want to make a high RPM generator that can power said LED light which if so can be done cheaply and easily with most any rewound DC brush type motor or line voltage rated one.