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  2. Button cell - Wikipedia

    en.wikipedia.org/wiki/Button_cell

    Button, coin, or watch cells. A button cell, watch battery, or coin battery is a small battery made of a single electrochemical cell and shaped as a squat cylinder typically 5 to 25 mm (0.197 to 0.984 in) in diameter and 1 to 6 mm (0.039 to 0.236 in) high – resembling a button.

  3. Solar-powered watch - Wikipedia

    en.wikipedia.org/wiki/Solar-powered_watch

    Citizen's watches use lithium-ion batteries to store sufficient energy to power the watch for up to five years without light exposure, [3] by allowing the watch to enter a power-saving or hibernation mode during which the seconds hand stops until the watch is re-exposed to light. Not all have a power-save mode, yet will still hold a charge for ...

  4. Electric watch - Wikipedia

    en.wikipedia.org/wiki/Electric_watch

    The Hamilton Watch Company would be the first to produce and retail an electric watch beginning in 1957, [1] before the commercial introduction of the quartz wristwatch in 1969 by Seiko with the Astron. Their timekeeping element was either a traditional balance wheel or a tuning fork, driven electromagnetically by a solenoid powered by a ...

  5. Silver oxide battery - Wikipedia

    en.wikipedia.org/wiki/Silver_oxide_battery

    Silver oxide battery used to power a quartz watch movement; battery is marked as containing no mercury. Until 2004, all silver oxide batteries contained up to 0.2% mercury, incorporated into the zinc anode to inhibit corrosion from the alkaline environment. [12]

  6. Amazon's rechargeable batteries 'last just as long as ... - AOL

    www.aol.com/lifestyle/recharge-amazon-basic...

    Amazon offers five quantities: four, eight, 12, 16 and 24 batteries per pack. The larger the pack, the less the per-battery cost. The 16-pack is a sweet spot that's affordable and gives you plenty ...

  7. Mercury battery - Wikipedia

    en.wikipedia.org/wiki/Mercury_battery

    Mercury oxide batteries were made in a range of sizes from miniature button cells used for hearing aids and electric wrist watches, cylindrical types used for portable electronic apparatus, rectangular batteries used for transistor radios, [5] and large multicell packs used for industrial applications such as radio remote control for overhead ...

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