What is the proper action if the MK-134 thermal battery overheats?

When addressing the overheating of an MK-134 thermal battery, the most appropriate action is to cool it down on a non-flammable surface. This method is essential because it minimizes the risk of ignition or combustion that could occur if the battery is placed in an unsuitable environment or if it continues to overheat.

Cooling down on a non-flammable surface is a safety measure that helps prevent further damage to the battery, reduces the risk of fire, and facilitates better control of the situation. It provides a stable environment where any thermal energy can be safely dissipated without the additional risk posed by nearby flammable materials.

Using a non-flammable surface ensures that the battery can cool without the hazard of igniting anything in its immediate vicinity. This action exemplifies prudent safety practices that are critical in handling potentially dangerous materials such as thermal batteries.