fuse box

Hello, i have a problem with my clio III 197 with the fuses. The fuse of the air was embedded and when i remove with a screwdriver the faston wasnt in her place. In the photo You can see how the one on the left does have the faston and on the other hand the one on the right is empty (from...

I'm having some difficulty removing the two fuse boxes that attach onto the battery casing. They are connected underneath and I don't want to slide them too hard in case of snapping the plastic or breaking the wires. As you need to remove the battery casing to fit a stock air box I would think...