Blue Coating on 12V battery terminals.

Today I decided to check my 12 battery with a digital voltmeter. When I got to it and could see the battery posts I was surprised to see what I first though was a fair bit of corrosion on the terminals and pigtail connections.

On closer inspection however it didn't look anything like corrosion I've ever seen before. It was a real cobalt blue color and the more I looked at it the more it seems that someone had actually sprayed it on.

I'm now almost certain that it's not corrosion, but I still don't know for sure what it is. Has anyone else seen something like this on their Gen II? If not then maybe the guy who owned the car before me sprayed it on.

 

Yep that's what it looks like to me. Do you know if it's factory applied firepa63?

 

Ok thanks for the info.

The 12V battery measured 12.5 volts BTW. This was with the car fully off, so as close to no load as is possible with the battery still connected. When I use the MFD signal check it's only 12.3V, though there's a small drain on the battery to power the car when that measurement is taken.