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    Content by Mika Satomi and Hannah Perner-Wilson


    Hannah is currently a graduate student in the MIT Media Lab's
    High-Low Tech research group


    Supported by Distance Lab
    Power

    Battery 101

    Here are some basic data (size, capacity) of various chargeable, non-chargeable batteries.

    NON-CHARGEABLE:


    size capacity voltage diam. height weight
    AAA 1250mAh 1.5v 10.5mm 44.5mm 11.5g
    AA 2890mAh 1.5v 14.5mm 50.5mm 23g
    C 8350mAh 1.5v 26.2mm 50mm 66.2g
    D 20500mAh 1.5v 34.2mm 61.5mm 148g
    9V 625mAh 9V   48.5mm 45.6g
    coin CR2032 200-230 mAh* 3V 20mm 3mm 3g


    *Maximum discharge current: 3 mA.

    Information Link:
    >> http://en.wikipedia.org/wiki/Battery_(electricity)
    >> http://en.wikipedia.org/wiki/List_of_battery_sizes

    CHARGEABLE:

    Nickel Cadmium Battery (NiCd)

    Created by Waldemar Jungner of Sweden in 1899 which was based on Thomas Edison’s first alkaline battery. Using nickel oxide hydroxide and metallic cadmium as electrodes. Cadmium is a toxic element, and was banned for most uses by the European Union in 2004. Nickel-cadmium batteries have been almost completely superseded by Nickel-metal hydride batteries.
    Voltage: 1.2V

    Nickel-Metal Hydride Battery (NiMH)

    First developed around 1980’s. The battery has a hydrogen-absorbing alloy for the negative electrode instead of cadmium.
    Voltage: 1.2V

    Lithium-ion Battery

    The technology behind Lithium-ion battery has not yet fully reached maturity. However, the batteries are the type of choice in many consumer electronics and have one of the best energy-to-mass ratios and a very slow loss of charge when not in use. The popularity of Lithium-ion batteries has spread as their technology continues to improve.
    Voltage: 3.6V

    Lithium Polymer Battery

    Unlike lithium-ion cylindrical, or prismatic cells, which have a rigid metal case, polymer cells have a flexible, foil-type (polymer laminate) case, but they still contain organic solvent.
    Voltage: 3.7V
    For more detail about Lithium Polymer Battery, see this post

    Information Link:
    >>http://en.wikipedia.org/wiki/Rechargeable_battery



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