I didn't have a magnifying glass on hand, but I used the wide angle lens on my phone to look closer. I didn't see anything except possibly a crack on one side of one of the connections that I'll inspect more closely tonight.

I did however notice earlier after reconnecting the RCM and just placing the negative terminal clamp back on without tightening it I was unable to crank the engine. Tightening the clamp allowed it to crank as normal, so that may definitely be related.