Fuse attached to battery

Hi all, first post so be gentle...

I had to have the flexi's on the exhaust done the other day, and the car wouldn't power up when they re-connected the battery.

Turns out it had blown the main fuse thing, the one that's actually attached to the battery. Looks like a flat ali plate.

Does anyone know what its real title is - or the part number? I've bridged it with some 15a wire for the moment but would rather sort it properly.

Thanks :smile:
 
Did they take your manifold off to (i assume) weld your flexis?

Not welded them whilst still on car?