Chemical reactions slow down when cooled. If you have access to a cooler and some dry ice you could try cooling the system down, just don’t freeze it! Use a good digital thermometer to monitor its temp.
Wear cotton clothing just in case. Wear a face shield and leather gloves working outside. Place your self upwind so the vapors and smoke goes away from you.
Loosen all the screws before removing them, don’t rush just don’t stop until you get the battery out.