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ALKALINE & LITHIUM CELL

Alkaline cells are a type of disposable battery or rechargeable battery dependent upon the reaction between zinc and manganese dioxide. Alkaline cells have 1.5 volts energy and have a higher energy density and longer shelf-life. The best side of alkaline cells is low cost. Alkaline cells are long-life batteries giving up to six times the life of ordinary zinc carbon batteries and they are ideal for appliances demanding a high current drain when being used on an intermittent or continuous basis.

Lithium is the lightest of metals and it floats on water. It also has the greatest electrochemical potential which makes it one of the most reactive of metals. These properties give Lithium the potential to achieve very high energy and power densities permitting batteries with very long useful life and small cell packages. Because Lithium reacts violently with water, as well as nitrogen in air, this requires sealed cells. High-rate Llithium cells build up temperature and pressure if they are short circuited or abused. Thus, the cell design needs to include safety vents, which release the pressure or rupture to prevent uncontrolled explosion. Typical chemistries are Lithium Manganese dioxide, Llithium Sulphur dioxide, Lithium Thionyl Chloride and Lithium Oxygen but other variants are available.

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