The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    How well will 150W-adapter [for HP_ 8710w] work with HP_8740w [HP says 200-230W+]?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by nrFan3, Aug 16, 2013.

  1. nrFan3

    nrFan3 Newbie

    Reputations:
    0
    Messages:
    3
    Likes Received:
    0
    Trophy Points:
    5
    ADAPTER A ...

    HSTNN-LA09
    19 Volts . 7.89 Amps . (Watts not labelled but looks to be 150W)
    - I think that this adapter might be the original factory adapter for the HP Elitebook 8510w and/or the HP Elitebook 8710w?

    ADAPTERS B1 / B2 / B3 ...

    HSTNN-CA16 / HSTNN-DA16 / HSTNN-DA24
    All 3 of these are rated at: 19.5 Volts . 10.3 Amps . 200W
    - I think that one [or more] of these 3 adapters is the original factory adapter for HP Elitebook 8740w, although I am wondering whether HP shipped the most powerful 8740w's with their 230W adapter such as HSTNN-DA12?

    My question is, how well will ADAPTER A work in place of ADAPTER B to power the following HP 8740w laptop and keep its battery charged?

    HP Elitebook 8740w -- XT910UT#ABA
    Core i7 740qm
    8GB DDR3
    500GB 7200rpm HDD
    nVidia Quadro FX 3800M

    Thanks for your replies.
     
    nrFan3, Aug 16, 2013
    #1
  2. ajkula66

    ajkula66 Courage and Consequence

    Reputations:
    3,018
    Messages:
    3,198
    Likes Received:
    2,318
    Trophy Points:
    231
    Welcome to the forum!

    Yes, that is a 150W adapter. 19x7.89 = 149.91.

    I wouldn't play with that on a top-end 8740W, you might get the adapter to overheat quite easily...and wreak havoc one way or another.

    My $0.02 only...
     
    ajkula66, Aug 16, 2013
    #2
  3. tijo

    tijo Sacred Blame

    Reputations:
    7,588
    Messages:
    10,023
    Likes Received:
    1,077
    Trophy Points:
    581
    For light use, think internet, it will be alright since th system won't draw a lot of power, but I wouldn't do anything remotely intensive using that psu. It might do in a pinch (until you get a proper adapter), but that's about it. I would order a replacement capable of giving the notebook the right amount of power. A used adapter shouldn't be too expensive on eBay.
     
    tijo, Aug 17, 2013
    #3
  4. jotm

    jotm Notebook Evangelist

    Reputations:
    347
    Messages:
    480
    Likes Received:
    87
    Trophy Points:
    41
    Assuming it's an original HP power source, it will work fine, but the laptop will throttle the CPU or GPU clocks at high load. If you want full performance, you need a 200W or higher adapter.
     
    jotm, Aug 17, 2013
    #4