Lithium-ion batteries (used in mobile phones in early 2000) are the ones with the lowest content of heavy metals, while the Zinc-carbon and alkaline manganese batteries (used nowadays in flashlights or remote controllers) contain worrying levels of cadmium and mercury, among other heavy metals.Įxtremely toxic to the environment, the chemicals inside will never decompose and will only pollute the soil around. Batteries consist of thin metal exterior sheet that acts a protection layer for heavy metals that are inside, at its very core.
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