Futurama (original) Psych Star Trek TNG/DS9 X Files Twilight Zone

All these are on continuous shuffle in my Jellyfin server.

Yup. Just the original series for me

How’s battery life?

Have you considered your local library? A lot of them have an excellent dvd/blu-ray selection especially when it comes to documentaries.

I know it is a little more work but you also get a lot more control of how you rip it.

Also, in the US, many libraries give you free access to the Kanopy streaming service which has a lot of documentaries on it.