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    Battery capacity

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by fred2028, Dec 14, 2009.

  1. fred2028

    fred2028 Sexy member

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    HWMonitor shows my 6-cell as having 5200 mWh of battery capacity. http://en.wikipedia.org/wiki/AA_battery and my AA battery itself shows a single AA battery as having 2500 mWh. Does this mean that 2 AA batteries has about the same capacity as my 6-cell?
     
    fred2028, Dec 14, 2009
    #1
  2. sgogeta4

    sgogeta4 Notebook Nobel Laureate

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    Are you sure that is correct? My 8-cell has 72535 mWhr.
     
    sgogeta4, Dec 14, 2009
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  3. fred2028

    fred2028 Sexy member

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    Yup, HWMonitor Pro confirms 5200 mWh, that is 2 zeros, not 3.

    But wait, Dell advertises the 6-cell as 56 Wh, which is 56,000 mWh, so is HWMonitor flawed?
     
    fred2028, Dec 14, 2009
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  4. Tinderbox (UK)

    Tinderbox (UK) BAKED BEAN KING

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    A rechargeable AA battery is 1.2 volts at approx 2500mah ,

    A Li-ion cell is 3.7 volts at 2500mah , it has more than 3x the capacity of the AA rechargeable.

    A 6 cell lin-ion battery has more power than 18x AA rechargeable battery's.
     
    Tinderbox (UK), Dec 14, 2009
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  5. Soviet Sunrise

    Soviet Sunrise Notebook Prophet

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    Tinderbox (UK) is correct. Watt-hours is calculated by multiplying voltage and current. For example, my battery has three cells with a total output of 42Wh. Voltage is 11.1v (3 x 3.7v) and current is 3800mah (3 x ~1267mah).
     
    Soviet Sunrise, Dec 14, 2009
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  6. DetlevCM

    DetlevCM Notebook Nobel Laureate

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    2500mAh for an AA battery is pretty hight - these are the expensive ones.
    (the old ones in my Powershot (pre EOS) are 1600mAh each)

    My Vaio's I believe 6 cell battery hat 62.640mWh when new - after 7.2% wear I have 58.000 left.
     
    DetlevCM, Dec 15, 2009
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  7. Explosivpotato

    Explosivpotato Notebook Consultant

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    Pretty sure there's a zero missing in there. Try another application?
     
    Explosivpotato, Dec 15, 2009
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