I'm going to build a battery box for my plane. I only need to power my radio and GPS, so I don't need a big battery. I found a sealed 12v 8AH battery that should work great. I want to put it in a battery box even though it is sealed, just in case. I originally intended to build an aluminum box, but I'm not sure how to seal the seams. I don't have the ability to weld aluminum. Would fiberglass resist battery acid? It shouldn't be too hard to build, and would be lighter than aluminum. Also, is it common to put baking soda or some other base in the bottom of a battery box, to help neutralize the acid in the event of a leak?