Here's a low-ish quality photo of the innars of a torpedo in the exhibit (not mine) https://www.reddit.com/r/ThingsCutInHalfPorn/comments/1jxk7k...
Specifically in that thread these photos https://imgur.com/a/zNry7
Sadly my photos from last year aren't any better, the cavern that U-505 is in has terrible lighting for photography.
I was quite surprised by the amount of gears, tubes, segments, weights, etc inside one. Even the amount of batteries initially caught me off guard because I'm used to thinking in modern lithium batteries and not lead acid.
I think that is a G7e torpedo above. https://en.wikipedia.org/wiki/G7e_torpedo