This is a long thread at over 200 posts, so I am not going to go back thru all posts to see how you plan to keep your electrics charged. But, with GPS, phone, a light for night use, taillight(s), possible camera, etc., that will be an issue.

Newer powerbanks that can be charged at over 15 watts are a real game changer compared to only a few years ago when you were lucky to be able to charge up a powerbank at over a few watts. But that can tempt you to waste power too.

Do you have a plan?

If I recall correctly, someone on this forum commented that some hiker biker sites have charging stations, but that was not the case when I rode it a decade ago. When I went into a restaurant, I was searching for a seat near outlets, etc. Was not convenient, but it was doable. Occasionally there was an outlet at an unused motor vehicle campsite near the hiker biker site that I could plug into, but that was unreliable and a theft concern.

I think you want to have at least five days of power storage available for charging your devices. If you have less, it is not a crisis, but you may find yourself sitting next to a charger and your powerbank and/or other devices at an outlet waiting for things to charge up.

I use a dynohub and a dyno powered USB charger to keep my electronics going, so what I do is not pertinent to what you will be doing.