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  2. Fort Dawes - Wikipedia

    en.wikipedia.org/wiki/Fort_Dawes

    The site's military history began in 1906 as the Deer Island Military Reservation, acquired for fire control and mine field control as part of the Taft program. [2]During World War II, Fort Dawes was initially the site of a target detection radar for the harbor defenses and Battery Taylor (two 3-inch M1902 guns moved from nearby Fort Strong), both completed by late 1942. [2]

  3. Battery tester - Wikipedia

    en.wikipedia.org/wiki/Battery_tester

    Battery tester. A battery tester is an electronic device intended for testing the state of an electric battery, going from a simple device for testing the charge actually present in the cells and/or its voltage output, to a more comprehensive testing of the battery's condition, namely its capacity for accumulating charge and any possible flaws affecting the battery's performance and security.

  4. Lithium metal battery - Wikipedia

    en.wikipedia.org/wiki/Lithium_metal_battery

    CR2032 lithium button cell battery Lithium 9 volt, AA, and AAA sizes. The top object is a battery of three lithium-manganese dioxide cells; the bottom two are lithium-iron disulfide cells and are compatible with 1.5-volt alkaline cells. Lithium metal batteries are primary batteries that have metallic lithium as an anode.

  5. BYD Blade battery - Wikipedia

    en.wikipedia.org/wiki/BYD_Blade_battery

    BYD claims that, in the nail penetration test, the blade battery emitted no smoke or fire after being penetrated, and its surface temperature reached only 30 to 60 °C (86 to 140 °F). The blade battery also passed other extreme test conditions, such as being crushed and bent, being heated in a furnace to 300 °C (572 °F), and being ...

  6. Eric Smidt - Wikipedia

    en.wikipedia.org/wiki/Eric_Smidt

    On March 22, 2020, Eric Smidt directed Harbor Freight to donate its entire supply of N95 masks, Face shields, and 5/7 mil Nitrile gloves to hospitals with a 24-hour emergency room. In June 2022, Eric & Susan Smidt donated $5 million to the Holocaust Museum LA , which will allow the museum to double its campus in Pan Pacific Park .

  7. History of the battery - Wikipedia

    en.wikipedia.org/wiki/History_of_the_battery

    Lithium-ion battery Curve of price and capacity of lithium-ion batteries over time; the price of these batteries declined by 97% in three decades. Lithium is the alkali metal with lowest density and with the greatest electrochemical potential and energy-to-weight ratio.

  8. AA battery - Wikipedia

    en.wikipedia.org/wiki/AA_battery

    A Li-ion 1.5V AA-size battery, sold by the Chinese company Kentli as "Kentli PH5" since 2014 and with similar batteries later available from other suppliers is a AA-sized battery housing containing a rechargeable 3.7 V Li-ion cell with an internal buck converter at the positive terminal to reduce the output voltage to 1.5 V. [19] The Kentli ...

  9. Electric eel - Wikipedia

    en.wikipedia.org/wiki/Electric_eel

    In 2009, they made synthetic protocells which can provide about a twentieth of the energy density of a lead–acid battery, and an energy conversion efficiency of 10%. [64] In 2016, Hao Sun and colleagues described a family of electric eel-mimicking devices that serve as high output voltage electrochemical capacitors. These are fabricated as ...

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