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    Batteries were originally developed by Alessandro Volta in 1800 and have been the subject of research ever since. 

    Today a wide range of battery types are available all of which have different characteristics that need to be understood in order to choose the most appropriate type.


    Certain batteries tend to be used for specific applications but price and size are often the main considerations. For example, zinc / carbon and alkali batteries are often used in torches as they are some of the cheapest types available and give reasonably long life.

    These same batteries could not be used in a mobile phone because they are not rechargeable. Hearing aids obviously need very small batteries with high capacity and so only certain types such as zinc / air can be used.


    Most electrical equipment is designed to function with a particular voltage and different battery types give different voltages. Therefore equipment designed to function with a 1.5 volt alkali battery will not be able to use a lithium ion battery that has a voltage, typically, of 3.7 volts.


    Batteries can be connected in series to give higher voltages as “battery packs” such as the well known standard 9 volt PP3 alkali battery which actually contains 6 individual cells connected in series.


    See our updated Battery Selection Guide attached:





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