Alkaline batteries explained
The alkaline battery was first introduced in the early 60’s, as a solution to portability issues within consumer installations. The chemical makeup of the batteries differ greatly from the old zinc chloride batteries, and where they may contain the same voltage as these batteries, the one advantage that they do have is that they have a much larger energy density and the self drain status is much lower than the earlier zinc chloride counterpart.
This means that you can keep your alkaline batteries on the shelf for much longer before it drains all the power away through normal electrical decay. The reason they are called alkaline batteries is because they have an alkaline within the battery matrix made of potassium hydroxide, which is far different from the acidic electrolyte used in the older zinc chloride and carbon batteries. Alkaline batteries are one of those useful products without which many devices would simply stop working. These are used so often that people normally fail to the notice the importance that they carry.
Alkaline batteries were first used to run small devices such as kid toys, TV remote controls, torches, radios etc. After a series of successful trials, their use was initiated within commercial installations and with the explosion of the market of portable gadgets, alkaline batteries have become life line of many appliances. Alkaline batteries may be considered as hazardous waste because of the materials of which they are made.
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