TM 10-3930-669-20 15-15.  BATTERY BOX REPLACEMENT (CONT). a.  Removal. WARNING ·    Battery acid (electrolyte) is extremely harmful.  Always wear safety goggles and rubber gloves, and do not smoke when performing maintenance on batteries. Injury will result if acid contacts skin or eyes.  Wear rubber apron to prevent clothing being damaged. ·    Remove all jewelry such as rings, dog tags, bracelets, etc.  If jewelry contacts battery terminal, a direct short may result in instant heating of tools, damage to equipment, and injury or death to personnel. NOTE Tag and mark all wires prior to removal. (1) Lift black rubber terminal cover (1) and loosen nut (2) until negative cable (3) can be removed from negative battery terminal (4). (2) Lift black rubber terminal cover (5) and loosen nut (6), until negative side of cable (7) can be removed from negative battery terminal (8). 15-48