Answer to "What is the least distructive way to open battery box?"If you want to take the actual pack itself apart: 1) Be very careful. Like any sizable battery pack it can hurt you if you short something. 2) Remove all the screws. 3) SLOWLY pull it apart enough to get a non-conductive plastic knife or Popsicle stick into the crack. 4) Be careful of the temperature sensor on thin wires inside. 5) SLOWLY pry with the non-conductive tool until the glue gives way.