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Vostro 3400 (LA-K033P) won't charge battery, everything else ok

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    Vostro 3400 (LA-K033P) won't charge battery, everything else ok

    I bought a Vostro 3400 motherboard (LA-K033P) to upgrade over my damaged Inspiron 5593 (LA-J091P) board. Everything else is ok except for the battery. This battery I am using now is already a replacement one since I disposed of the bloated original one. Back in the Inspiron 5593 motherboard, the battery charges fine and is identified just fine. However, with the upgraded motherboard, suddenly the replacement battery is labeled as "Not a dell battery". When I borrow a similar battery from my colleague (which did not have replacements yet), it is identified and charges just fine.

    I temporarily resorted to taking apart the laptop every time and then moving the charging port and battery into the old board and charging it bare from there, since that's the only way I can charge it. However, recently the old board started refusing the charge the battery, and I got it accidentally run down to the point the new board wont even turn on anymore on battery power. Tried to charge the battery cells directly charged from 3.1v up to 4.1v each but still it is being reported as 0%. The battery I am using is a YRDD6. I also tried using the replacement WDX0R from my dead Inspiron 5570, which was a backup for my old 5593 board, but it was also identified as "Not a dell battery", even though laptop uses it no problem, provided battery had power. Both batteries got discharged to 0%, but I revived them both now, though still no joy

    Is there any way I can somehow trick the laptop into thinking my replacement battery is a dell battery? Or at least make it use either battery, which is obviously fully charged now? Or is it really the case that if these batteries reach a critically low voltage, the BMS disconnects the battery permanently and will not re-connect even if you re-charge the cells directly? I would like to rule out the battery is really not usable anymore before I start wasting my time trying to find a 3rd party "dell" battery which my laptop will identify and charge properly.

    I checked voltage on battery socket, with battery connected, I get 12.4v on pin 8-10, and 3.3v on pin 6-7 for both batteries. I got their voltages within 4.1v per cell.

    #2
    Re: Vostro 3400 (LA-K033P) won't charge battery, everything else ok

    Update the bios to the latest and test again.

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      #3
      Re: Vostro 3400 (LA-K033P) won't charge battery, everything else ok

      Originally posted by mon2 View Post
      Update the bios to the latest and test again.
      I am on 1.25.0 bios, and I cannot update to 1.26.0 anymore since it wants 10% battery but for some reason it can't identify my full charged battery.

      I observed that for a few seconds after shutting down, I get 0v on the battery socket and then back to 12.4v

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        #4
        Re: Vostro 3400 (LA-K033P) won't charge battery, everything else ok

        I would suggest to seek out a known compatible battery for this model of laptop to test again. The BMS may not be compatible with this laptop.

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          #5
          Re: Vostro 3400 (LA-K033P) won't charge battery, everything else ok

          I don't recommend it as a power failure will brick the BIOS, but you can generally force update without battery using the BIOS Update utility in the UEFI Boot Menu and passing the "/forceit" parameter. I don't really see why that would fix the problem of incompatible battery though.
          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

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            #6
            Re: Vostro 3400 (LA-K033P) won't charge battery, everything else ok

            I managed to get these details for the battery with HWInfo.

            General Properties
            Device Name: DELL CYMGM68
            Manufacturer Name: Samsung SDI
            Serial Number: 2322
            Unique ID: 2322Samsung SDIDELL CYMGM68
            Chemistry: Lithium Ion
            Designed Capacity: 41998 mWh
            Full Charged Capacity: 37894 mWh
            Wear Level: 9.8 %

            Current Power Status
            Power Status: Critical On AC Power
            Current Capacity: 0 mWh (0.0 %)
            Current Voltage: 12.123 V

            For some reason the battery reports 0% even though the voltage is about 12v, full charge territory since battery was rated to 11.4v. Battery was fine and can be recharged just fine using my 5593 board but after the deep discharge, it just keeps saying 0% even if it is fully charged. Is this because the IC in the BMS locked out the battery from further use? Also, after the discharge, the 5593 board refuses to boot with this battery anymore, or maybe I guess that board's MOSFETs finally gave in

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