No point in risking an expensive plane to save a couple of bucks, Leave pack building to the pros. The fact your asking these questions means your probably not qualified to make receiver packs. If you would like to make some battery packs, by all means develop your skills, just don't make reciever or transmitter packs untill you really know what your doing. Most high quality packs are welded anyway, which is not something you can duplicate at home. The guys who really make it in this hobby learn quickly how minimize possible failure points in thier aircraft and do everything they can to ensure reliability. Battery packs are a critical component and should be treated as such.