HP Envy x360 15-cp0012AU battery issue

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  • s_henya
    Badcaps Veteran
    • Jan 2011
    • 480
    • Israel
    #1

    HP Envy x360 15-cp0012AU battery issue

    Hi i got this nice laptop in for battery replacement TS.

    Owner ordered a replacement battery off Ebay (seller ratings were legit though :-)
    Charger is a also new non original HP blue pin but does own the resistor between (+) to middle pin.
    + 19.76v
    0.845v on brown wire

    Original battery (LK03XL) was bloated and was showing 100% but didn't hold any charge,
    Pin1-2 (+) terminal 0.056v.
    Pin3: 2.968v
    Pin4 2.968v
    Pin5: 3.23v
    Pin 6-8: GND

    Replacement battery arrived charged and laptop powered up.
    But didn't agree to charge the using laptop charger.
    It eventually drained

    I wanted to understand if the battery will agree to charge if i apply 11v off my adjustable power supply to the battery + terminal once it's still connected to the MB, and it was charging fine.
    Pin1-2 (+) terminal 9.7v.
    Pin3: 2.852v
    Pin4 2.852v
    Pin5: 3.13v
    Pin 6-8: GND

    Weird thing is that now the laptop refuses to power up with the new battery connected (3 orange blinks).
    Without any battery or using the old battery it's powering without any issue.

    I know sometimes the battery itself might be the issue but since it was charging fine if i apply voltage then i doubt if i can eliminate any other factors before ordering another battery from a different seller.
    Attached Files
    Last edited by s_henya; 06-05-2023, 09:54 PM.
    Tags: None
    • mcplslg123
      Badcaps Legend
      • Jun 2015
      • 7262
      • india
      #2
      Re: HP Envy x360 15-cp0012AU battery issue

      You injected 11V to + terminal of battery while it was connected to motherboard? Thats not the way to check a battery. If this was what you did,You may have damaged the dischrge fet and/or charger IC.

      Wait for others opinion.

        Comment

        • s_henya
          Badcaps Veteran
          • Jan 2011
          • 480
          • Israel
          #3
          Re: HP Envy x360 15-cp0012AU battery issue

          i let the new battery drain while connected to the MB without charger and the laptop agrees to power up with it.

          So no harm was done.

          new battery is being identified orange light is one, battery charge is 0% but it's not increasing.

          Can you suggest some tests? maybe around the charger ic BQ25708
          Last edited by s_henya; 06-06-2023, 09:54 AM.

            Comment

            • mcplslg123
              Badcaps Legend
              • Jun 2015
              • 7262
              • india
              #4
              Re: HP Envy x360 15-cp0012AU battery issue

              What is the motherboard markings? Link schematic,if available.

                Comment

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