Sorry for the delay. I still haven't finished the work, but here are some pictures to give you an idea on how I am going about it. The first picture shows the reinforcement inside the fuse to handle the weight of a 2200mAh battery when the plane is thrown around (I put the "lips" on top of the fuse just to show them. Sorry if they seem out of focus, I had the wrong aperture lens on my camera when I took the pictures.) I then glued a thin rectangular piece of plywood about the size of the battery on top of the three cross bars so that I could wrap the battery with two pieces of velcro; this is shown in the second picture.

Hope this helps and little, and good luck with your project.