Looking at these to help with charging the batteries in my tent trailer. Do not want a fixed mount, prefer to keep it portable for any use. How are you folks transporting these without damage? Would making a small angle iron frame to mount it in on the back of the tent trailer work? I have room between the spare tire mount and the body of the trailer, right off the rear bumper. Thinking a 3 sided frame to slide it into might work? This will just be for transport and storage. Will vibration kill it? Room in the truck is at a premium, and mounting to the roof of the trailer is a last choice for me.