 Say the battery's installed, and you go. And if you don't do that, it will not. It'll go wacky. Yeah, they will not discharge, charge correctly. People don't realize that on these European cars. There's a bunch of them that are like that. When we have one removed at our shop, we hook battery backup to it, which is very minor, and move the cables off before we swap the battery. Then we put the battery back in, put the cables on.