The first rechargeable batteries used in cordless power tools were made from nickel cadmium. However, as battery technology has progressed, these types of batteries have become less widely used for a number of reasons, including their use of the toxic element cadmium, which requires special care when being disposed of.
Advantages
NiCd batteries perform well in lower temperatures so they can be used outdoors in cold weather.
They are the least expensive when compared to NiMH and Li-Ion.
They have a longer life-cycle than Li-Ion or NiMH.
Disadvantages
They tend to be heavier than other batteries of the same voltage.
They contain cadmium which is a very toxic metal that requires hazardous waste disposal.
To do this responsibly, you should contact your nearest licensed recycling centre.
They suffer from ‘memory effect’.
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