I really need to find a way to express more clearly what I consider a "replaceable battery".

I mean a battery that I can swap out "on the road" without any tools.
Like with the N900: pry off back cover, take out old battery, insert new one, reattach cover
Or with my old laptop: unlock lock switch, hold back spring switch, take out battery, snap in new battery, lock lock switch

I can't do that with any of the Librem laptops (or a lot of "modern" laptops for that matter). I need at least a screw driver for that which in turn means I wouldn't want to do that in a crowded rocking train where I'd lose half of the screws in the process.
That's what I'm afraid of will also be the case for the Librem 5.