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    Compaq EVO N800c power off in battery mode

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by gkamendje, Aug 28, 2008.

  1. gkamendje

    gkamendje Newbie

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    Hi
    when I disconnect my Evo N800c from power supply it immediately shuts off altough the battery indicator indicates that the battery is fully charged.
    Thanks for any hint
     
    gkamendje, Aug 28, 2008
    #1
  2. naton

    naton Notebook Virtuoso

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    How old is your battery?

    Looks like your battery is dead. If you use any battery monitoring software you'll see that the capacity of the battery after the laptop shuts down is about 98% or 99% and it charges to 100% is a couple of minutes.

    When a battery dies its internal controller sometimes gets mess-up hence the battery indicates full charge when it's actually flat.

    You could use RMClock since it has a battery monitoring tab.
     
    naton, Aug 28, 2008
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  3. gkamendje

    gkamendje Newbie

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    Thanks for the hint. This is exactly what is happening.
    GA
     
    gkamendje, Aug 28, 2008
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  4. K-TRON

    K-TRON Hi, I'm Jimmy Diesel ^_^

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    If you see a great amount of wear on the battery inthe battery tab, than its time for a replacement battery.

    If rightmark cannot pick up any information on the battery, than you can try using a voltmeter. Remove the battery from the system, and than use the voltmeter to see the voltage in the battery.
    If the voltage is like 3v than you have a problem, cause most batteries are rated for either 11.1, 14.4 or some other voltage.

    Also take note of the voltage of the battery when the system indicates it is fully charged. Than compare that value to the value which is stated on the battery.

    K-TRON
     
    K-TRON, Aug 28, 2008
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  5. gkamendje

    gkamendje Newbie

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    Hmm! my voltmeter display 16.43 as the battery voltage. Could it be that the battery connection is broken?
    GA
     
    gkamendje, Aug 29, 2008
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  6. K-TRON

    K-TRON Hi, I'm Jimmy Diesel ^_^

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    Well, this may as well be a problem with your charging circuit on the laptop.
    If possible, remove the battery and turn the system on.
    Than use the voltemeter to check the power output for the battery
    (You need to stick the voltmeter onto the leads of the battery charging port. - This is connected to the motherboard, so be careful, you dont want any of the wires to short the system.)
    Than if you are getting a 16volt output from the system, than it is a battery problem.
    However, if relatively 0volts is coming out of the charging circuit, than you have a problem. That would mean that the charging circuit is fried, and a new motherboard would be needed for you to be able to charge your batteries.

    K-TRON
     
    K-TRON, Aug 29, 2008
    #6