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HeckGazer @ HeckGazer @programming.dev
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2 yr. ago

Why are batteries in phones always measured in mAh instead of Wh like for example notebooks?

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  • Wh is a unit of energy, Ah is a unit of electric charge, basically how many physical electrons passed by.

    The voltage of a battery goes down gradually as it is discharged, so getting an accurate value for total energy dissipated is very complicated, as this varies greatly with the discharge profile and other physical factors like the age/health of the battery.

    The one thing that stays constant is the amount of electric charge a battery can provide. If it's old, the voltage of that charge will be lower and go down quicker, but it will be the same total charge.

    I agree from a consumer point of view, joules would be a friendlier unit, however it is also a lot easier to game. Electric charge is a much more definite unit in an electrical engineering sense.

    If any of what I said is confusing please ask me to clarify, I'm assuming a basic level of electronic literacy but it's hard to know what knowledge I'm taking for granted as an ex electrical engineer.

    • Elusive Ernie: China's new chatbot has a censorship problem

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  • There's a typo in the title, should read "China's new chat bot has a censorship feature"

    • Is Peter Piper related to the Pied Piper?

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  • She's their stepsister

    • [POLL] Do you use/require a headphone jack on your phone?

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  • Don't let yourself be gaslit by anti right to repair and apple propaganda. We had a smartphone with removable battery and headphone jack that you could swim with, it has been done. The water resistance argument does not hold water, at all.

    • Federation Updates

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  • Great news on all fronts, both of those instances were pretty much straight poison in different ways.

    • Why are random characters missing in my Debian virtualbox

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  • The other letters are DLC, or you can grind them out in this season's font battlepass.

    Also
    https://screenshot.help

    • A question about passwords | characters used in them

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  • Once it gets that long it's something like if every atom in the universe was used as a bit of computing it would still take some absurd n in 10^n heat deaths. Wild how fast the entropy zooms off the edge of the map

    • If 'carbon negative' and 'carbon positive' are terms used interchangeably to mean completely opposite things, what are alternative terms that clarify the difference without confusion?

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  • Ngl I've never heard anyone ever refer to "carbon negative" as "carbon positive" in my entire life until today.

    • Banana? Banana.

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  • Checkmate atheists

    • Using radiotherapy to cure cancer which was caused by exposure to radioactive materials sounds a lot like homeopathy (except in this case it actually works)

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  • "Man slashed with knife goes into surgery to be slashed further by smaller knives"