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CMOS battery for laptop HP Pavillon ze4354EA - where is it?

Hi gurus,

I completely opened my laptop in order to replace the CMOS battery, but unfortunately I am unable to find it! Where is it located?

Is there a picture for it?

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  • 2 more comments 
  • Campi Bisenzio
    Campi Bisenzio Mar 09, 2008

    Tnx, I had a look into the manual but... I cannot locate the battery anyway :(

  • Campi Bisenzio
    Campi Bisenzio Mar 10, 2008

    Hi Palmbeach,

    thank you again for your replay.
    Unfortunately there is any "silver button cell" on the mobo, **r soldere neither plugged. I'm very sorprised by this layout. Maybe I need to look for something different, but I have ** idea about what :(

  • maar Apr 27, 2008

    I need to clear the CMOS battery of my laptop to clear the bios password i forgot. i the location of the CMOS battery of my Toshiba A 135- S2386.

    i need your help if you get a copy of the repair manual .


  • PCsHateMe May 11, 2009

    Just FYI, I do NOT suggest going to Toshiba to get the problem solved!!!
    My A135-S2386 was losing time, took it in (100 miles away) under warranty, with a "while I wait" promise. Instead I had to bring it back when they got a part (the battery) in. I brought it back -- they still insisted on keeping it, to make sure it worked properly. Finally got it back after 4 days. Clock STILL did not work, and now, lots of other things are fowled up. So now, Toshiba is on the "NEVER AGAIN" list along with dumb dell! Guess I'll try Gateway again next - they were big enough to admit their errors!



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  • 185 Answers

See page 91 in the manual which you can download >HERE<

Posted on Mar 09, 2008

  • Palmbeach
    Palmbeach Mar 09, 2008

    The battery is somewhere on the motherboard. I believe it is a silver button cell. You should be able to locate it. Sorry the manual was not very helpful. I guess HP don't expect people to change it. Good luck anyway..



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