Fuse box removal

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 this is a common/easy job.
Any help would be much appreciated.
InkedIMG_0296_LI.jpg
 
They clip onto the side of the battery tray, and that itself is in like 3 parts, I doubt you'd get them off without removing the battery and the tray.
 
Thing is, i've removed the battery and tray to the point where only the fuse box leads are holding the tray in. I've heard of people wiggling an airbox in there without removing the battery case but I can't believe that.
 
Take the top covers off the both of them.

You will then see how they are clipped onto the battery box.

Using a flat screwdriver prise the clip outwards and lift the fuse holder up.