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    BATTERY 6 cell Dell 56Whr <> 6 cell Sony vaio Z 58 WHr

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by Laptopaddict, Jul 7, 2009.

  1. Laptopaddict

    Laptopaddict Notebook Deity

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    Laptopaddict, Jul 7, 2009
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  2. qhn

    qhn Notebook User

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    Don't know.

    Each manufacturer has its own way to manage smart batteries and trying its best to extend batteries life.

    I would not be bothered with it, as long as the end result is what they say it is and I am happy with the product that I bought. How it gets there and how it works is its own business, unless you see that as a factor that would turn you away from buying the notebook.

    cheers ...
     
    qhn, Jul 7, 2009
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  3. Dreamer

    Dreamer The Bad Boy

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    Rachel, there won't be any Voodoo magic here if that's what you're fishing for, moreover you didn't get the point of this thread at all. By "loading" time the OP means charging not running time.


    On topic:

    In short, some manufacturers use fast charge technologies for the first 80-90% of battery capacity, then switch to trickle charging for the rest, others don't.

    Dell specifically offers an "Express Charge" feature (BIOS option), which is very useful in some situations, but could also have a negative impact on the battery life-spam in a long run.
     
    Dreamer, Jul 7, 2009
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  4. Laptopaddict

    Laptopaddict Notebook Deity

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    I don't mind if the Sony is charged for 80-90 % in the first hour, is this the case ?
     
    Laptopaddict, Jul 7, 2009
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  5. Dreamer

    Dreamer The Bad Boy

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    No, it doesn't have a fast-charge feature as far as I know.

    You could ask the owners about the average charging time, but post in the owners thread this time rather then making a new thread, as you already tried the latter with no result.
     
    Dreamer, Jul 7, 2009
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  6. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    The new Dell Latitudes have a fast charge option in the BIOS. This option will get to 80% charge in one hour. It is disabled by default as the faster charge rate creates more heat and will shorten the battery life.

    John
     
    John Ratsey, Jul 7, 2009
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  7. Phil

    Phil Retired

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    I think the wattage of the charger also influences loading time.

    How much watt are the Sony and Dell?
     
    Phil, Jul 7, 2009
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  8. unknowntt

    unknowntt Notebook Evangelist

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    the power rating (wattage) of the charger will definitely affect charging time, but so does the power rating of the notebook itself...basically...it's the rate at which the energy is consumed by the notebook vs the rate at which the energy is delivered via the charger...and if you're WITHOUT a charger...then it simple depends on how much energy the battery itself stores (which is commonly measured in joules, but notebook batters measure in Whr [watt-hours]).
     
    unknowntt, Jul 8, 2009
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  9. jackluo923

    jackluo923 Notebook Virtuoso

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    1Whr= 3600J/s
     
    jackluo923, Jul 8, 2009
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  10. unknowntt

    unknowntt Notebook Evangelist

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    no.... a Whr is a measurement of amount of energy...the figure that you quoted with the J/s is a measurement of power (or the rate of change of energy)
     
    unknowntt, Jul 8, 2009
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  11. jackluo923

    jackluo923 Notebook Virtuoso

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    oops, correction: 1Whr = 3600J
     
    jackluo923, Jul 8, 2009
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  12. unknowntt

    unknowntt Notebook Evangelist

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    lol yeah there ya go...
     
    unknowntt, Jul 8, 2009
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  13. jackluo923

    jackluo923 Notebook Virtuoso

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    I was temporarily fooled by the hour unit after "Watt". LOL.. So I put seconds unit after Joules.

    1Watt = 1Joule per second
    1Watt Per Hour = 1/3600 joules per second
    1Watt Hour = 3600 joules
     
    jackluo923, Jul 8, 2009
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  14. unknowntt

    unknowntt Notebook Evangelist

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    lol everything was right...but 1 watt per hour is rate of change of power...it's like acceleration and velocity....

    1 watt PER hour would be 1 joule/second^2 (squared)--not 3600 joules per second

    oh wait...actually...1 watt PER hour would be....something else squared (cause of unitary conversions...hours to seconds and what not), but to simplify...

    1 watt per second would indeed be 1 joule/second^2
     
    unknowntt, Jul 8, 2009
    #14