Can modern batteries leak?

Answer:

Leaks were formerly an annoying effect of the cheaper zinc-carbon batteries that where mostly produced until the seventies. When using this type of battery, the zinc casing of the battery was eaten by the performed chemical reactions within the cell. In the eighties manufacturers introduced an upgraded version of zinc-carbon batteries on the market (a double zinc cup against leaks) and a new form of electrolyte that caused crystallization in stead of leakage. During this period of time the alkaline battery was also introduced on the market (other structure and chemical composition). Nowadays producers only bring alkaline and the improved carbon zinc batteries on the market. Rechargeable batteries naturally don’t duffer from leaks. However, it remains advisable to make sure that batteries are not exposed to extreme high temperatures.

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