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    Battery life HP Pavilion ?

    Discussion in 'HP' started by rolando, Jul 3, 2008.

  1. rolando

    rolando Newbie

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    I have 2 batterys for Pavilion ZT3010, 14.8 V 4.4AHr, both very intensively used. Both contineously charged, consecutively.
    Recently, time to use is decreased for both to 40-50 mins but after 25 mins laptop shuts down unanounced !
    Are the batterys end life ? both are less than 2 years old !
     
    rolando, Jul 3, 2008
    #1
  2. HPDV6700

    HPDV6700 Notebook Consultant

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    I would try to recalibrate them.. If that does not work, i think they are shot. I also have the same problem on My Gateway late 2005 7330Gz laptop, the battery only last like 25 mis or so, then it will just cut out at like 65% remaining.. I did the recalibrate thing..... did not fix it... but now the battery reader is accurate.
     
    HPDV6700, Jul 3, 2008
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  3. Kwopau

    Kwopau Notebook Enthusiast

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    Since you mentioned that the computer shutdown unannounced after 25 minutes of usage, I'm sure that one of the cell in the battery is dead. Therefore it's time to get a new battery for your notebook.
     
    Kwopau, Jul 3, 2008
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  4. rolando

    rolando Newbie

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    how do I recalibrate a battery ?
     
    rolando, Jul 4, 2008
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  5. Kwopau

    Kwopau Notebook Enthusiast

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    Well what you do is have it charged full. Then turn off your power saving mode, the alert off, and on the power management. Do "Never" on the hibernate or standby. and just run the notebook with the battery and let it discharge fully on it's own. Once it's fully discharged, then fully charge it again.
     
    Kwopau, Jul 4, 2008
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  6. Sharkonwheels

    Sharkonwheels Notebook Evangelist

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    Going a step firther, you MAY have some luck in reviving the battery.
    Stay in the BIOS, turn off any battery power saving options, let it fully charge, and then unplug and fully discharge it, and cycle it like that a few times, and see if maybe you can get some life back in it.

    I have successfully been able to somewhat revive batteries, even some old NiMH in an old PowerBook 5300 - when I got it, the battery only ran like 10 minutes, and I successfully revived it to give about 60-75 minutes, which isn;t bad for the age.

    Our problem is we probably use our laptops on the ac adapter about 75% or more, and if the cells don't get used, they go bad. Mine is made worse, as my laptop is a Dell latitude, and I have docks at the office AND at home, so I have to make a conscious effort to USE the battery!

    For those of you with older NiMH packs on older gear that have gone bad, try a zap charge - do a quick 1 second double- or triple-rate (ie, 12v battery, pop 24v or 36v into it) zap to clear the crystallization out of the cells. Old trick from us RC car racers using battery packs.

    NOTE: this will NOT work on LiIon or LiPo packs, so please don't try - it could actually be dangerous on lithium packs!
    Lithium cells have an amazing amount of energy storage capacity, and can be downright deadly if mishandled!

    T
     
    Sharkonwheels, Jul 4, 2008
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