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  2. Leaked Apple repair videos offer a peek behind the curtain

    www.engadget.com/2018-07-23-leaked-apple-repair...

    The videos also show how well sites like iFixit have been able to reverse engineer the repair process; Motherboard notes that the process in the iPhone X battery replacement video is extremely ...

  3. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    3LR12 (4.5-volt), D, C, AA, AAA, AAAA (1.5-volt), A23 (12-volt), PP3 (9-volt), CR2032 (3-volt), and LR44 (1.5-volt) batteries. This is a list of the sizes, shapes, and general characteristics of some common primary and secondary battery types in household, automotive and light industrial use. The complete nomenclature for a battery specifies ...

  4. Vacuum tube battery - Wikipedia

    en.wikipedia.org/wiki/Vacuum_tube_battery

    The last B batteries sold were 22 1/2 volts and similar in size to a PP3 9-volt battery. Even when the plate voltage rail is fed by a power supply rather than a battery, it is generally referred to as the "B+" line in American schematics. Because plate voltages can be as high as 300 V DC, multiple "B" batteries may be connected together in ...

  5. Float voltage - Wikipedia

    en.wikipedia.org/wiki/Float_voltage

    Float voltage. Float voltage is the voltage at which a battery is maintained after being fully charged to maintain that capacity by compensating for self-discharge of the battery. [1] The voltage could be held constant for the entire duration of the cell's operation (such as in an automotive battery) or could be held for a particular phase of ...

  6. ViXion01 glasses reduce eyestrain by doing the focusing for you

    www.engadget.com/vixion01-glasses-reduce...

    At the heart of the ViXion01 is its front-facing ToF (time of flight) sensor, which lets it measure the distance of your target object and quickly adjust its lenses on the go. The basic concept is ...

  7. Video: This Bendable Remote Control Has No ... - TechCrunch

    techcrunch.com/2011/10/27/video-this-bendable...

    Shake the device, which doesn’t require batteries to work, to turn the TV on or off. Murata explains: This remote control is made using a special polyester piezoelectric film.

  8. Apple will replace unresponsive iPhone 11 screens for free

    www.engadget.com/apple-iphone-11-screen...

    “A small percentage of iPhone 11” units suffer from touch issues, Apple says, and it’s swapping out their displays for free as part of a new replacement program. Apple didn’t elaborate on ...

  9. Mercury battery - Wikipedia

    en.wikipedia.org/wiki/Mercury_battery

    Mercury battery. 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. The voltage during discharge remains practically constant ...

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