Dry batteries stored beyond the normal safe shelf-life period are liable to suffer from corrosion of the zinc containers due to the action thereon of the Salammoniac and other chemicals used. This corrosion can quite easily come through the outer cardboard covering of a radio or torch battery and damage anything with which it comes into contact. Alternatively, and also with age, the paste electrolyte may dry out almost completely. Either corrosion of the zincs or drying of the past electrolyte renders dry batteries useless. The principal enemies of dry batteries in storage are excessive heat or damp. A cool, dry store is essential.
The discharge of a dry battery at a very high rate, such as would occur in accidental shorting, is liable to cause the paste electrolyte to liquefy. In larger type cells, the electrolyte might, under these conditions, ooze out from the container and cause damage by corrosion to anything with which it came into contact. See also IMDG Code & US CFR.
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