I use the braid too. I have done the shrink wrap thing which works good, but have also used the vinyl "dip" used to coat tool handles. You can get it in different colors at Home Depot or any hardware store. After you glue the cells together and solder everything on, you dip the pack and let it dry. This works well on odd cell configurations. I have done this with good results for custom packs on my micro rs4.