Condensation? I can see why that is something to take into consideration, but I do not really think so. I have a few arguments:
It was not mounted upside down.
Everything else was extremely dry. No sign of former wet spots, no black spots. Other then the exact spot where it dripped. I did go back and check for it.
I agree there was a bit more liquid then usual, but then again (and I am an electronics repair hobbyist so did see a bunch) usually I only see elco’s fail because they are hot and dried out. And even then, there was some liquid, but still only a few drops (see images). Possibly you misunderstood me above and think I meant it poured out, but I did not say that. A few drops fell out.
Also, I do not think external water and related shorting make capacitors erupt internally. It blows fuses. It corrodes the leads. Destroys silicon by putting voltage on the wrong leads. But not erupt capacitors.
Refrezing could sheer off the leads. I guess refreezing could also tear out the leads and in that case you may be correct (because that would next leak). But I’d have to open it to see that.
It would really be interesting. I guess if warranty is rejected (I hope not) I should do a autopsy and post about it. I am hoping though Victron would rather do that themselves.
Image of the drops:
Edit: Link to similar device pried/shown open: