New to ROG Ally X: Some Questions

I got a ROG Ally X for Christmas. It is Amazing. I mostly play AC Shadows and MK1 on it as of now and it runs both games exquisitely. But I had some questions I thought the community would be best suited to answer, as between the manual and online articles, there’s some information that contradicts one another.

Important Context: I don’t get to play it every single day, but when I do, it’s 2-3 hours each sitting.

So:

1. Between playing it on battery and charging it (possibly for a day of sitting), should I shut it down or hibernate it?

2. Power Bricks/Cables/Banks: What wattage of power bank works best when unable to access outlets? I have a UGREEN 45W 20k MaH power-bank. And an Anker Wall brick for charging access in multiple rooms. I understood that certain ArmoryCrate settings like 30W wouldn’t work on lower threshold wattage chargers.

3. For the day or two that I might not get to play it, should I be only charging it to 50% as per the manual? They say that if it’s going to sit idle, one should do so, but they don’t quite clarify how long that applies to.

I just want to make sure that I’m taking good care of it, and that I get the maximum healthy lifespan out of it.

I am open to any and all insights, articles, links, game ideas, cost effective SD cards, things I can do with my RoG that J might not have known, etc. I greatly appreciate the replies in advance. Thanks guys!