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  2. Button cell - Wikipedia

    en.wikipedia.org/wiki/Button_cell

    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. Stainless steel usually forms the bottom body and positive terminal of the cell; insulated from ...

  3. Silver oxide battery - Wikipedia

    en.wikipedia.org/wiki/Silver_oxide_battery

    Silver oxide battery. A silver oxide battery (IEC code: S) is a primary cell using silver oxide as the cathode material and zinc for the anode. These cells maintain a nearly constant nominal voltage during discharge until fully depleted. [2] They are available in small sizes as button cells, where the amount of silver used is minimal and not a ...

  4. Comparison of commercial battery types - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_commercial...

    Common characteristics. Rechargeable characteristics. Thermal runaway. NiCd vs. NiMH vs. Li-ion vs. Li–polymer vs. LTO. See also. References. Comparison of commercial battery types. This is a list of commercially-available battery types summarizing some of their characteristics for ready comparison.

  5. Play Solitaire Classic Online for Free - AOL.com

    www.aol.com/.../masque-publishing/solitaire-classic

    Play Solitaire, one of the most addicting games online, for free on Games.com. Build in the same suit from Ace to King until each pile contains 13 cards.

  6. History of watches - Wikipedia

    en.wikipedia.org/wiki/History_of_watches

    A 16th-century portable drum watch with sundial. The 24-hour dial has Roman numerals on the outer band and Hindu–Arabic numerals on the inner one. [ 1 ] The history of watches began in 16th-century Europe, where watches evolved from portable spring-driven clocks, which first appeared in the 15th century. The watch was developed by inventors ...

  7. Eco-Drive - Wikipedia

    en.wikipedia.org/wiki/Eco-Drive

    Later specialized tool watch designs were introduced like the Promaster Eco-Drive Professional Diver 1000M Titanium BN7020-09E in 2017. This is a very large watch, the titanium watch case has a diameter of 52.2 mm and thickness of 22 mm and features a helium release valve, designed for mixed gas saturation diving at great depths. [6] [7] [8]

  8. Automatic watch - Wikipedia

    en.wikipedia.org/wiki/Automatic_watch

    An automatic watch, also known as a self-winding watch or simply an automatic, is a mechanical watch where the natural motion of the wearer provides energy to wind the mainspring, making manual winding unnecessary if worn enough. [ 1 ] It is distinguished from a manual watch in that a manual watch must have its mainspring wound by hand at ...

  9. Mercury battery - Wikipedia

    en.wikipedia.org/wiki/Mercury_battery

    Mercury battery "РЦ-53М" (RTs-53M), Russian manufactured in 1989. A mercury battery (also called mercuric oxide battery, mercury cell, button cell, or Ruben-Mallory[1]) is a non-rechargeable electrochemical battery, a primary cell. Mercury batteries use a reaction between mercuric oxide and zinc electrodes in an alkaline electrolyte.

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