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EBC-A20 Battery Testing machine capacitor failure on buck converter part of board

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    #21
    Re: EBC-A20 Battery Testing machine capacitor failure on buck converter part of board

    Well I had some time to move everything from one enclosure to the other enclosure so now I have the two EBC-A20 with the switching power supply now I just have to put some banana power jacks on the back of the enclosure so I can use the switching power output for buck converters
    Last edited by sam_sam_sam; 09-18-2022, 06:26 AM.
    9 PC LCD Monitor
    6 LCD Flat Screen TV
    30 Desk Top Switching Power Supply
    10 Battery Charger Switching Power Supply for Power Tool
    6 18v Lithium Battery Power Boards for Tool Battery Packs
    1 XBox 360 Switching Power Supply and M Board
    25 Servo Drives 220/460 3 Phase
    6 De-soldering Station Switching Power Supply 1 Power Supply
    1 Dell Mother Board
    15 Computer Power Supply
    1 HP Printer Supply & Control Board * lighting finished it *


    These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

    1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
    2 Hem Saw Computer Stack Board

    All of these had CAPs POOF
    All of the mosfet that are taken out by bad caps

    Comment


      #22
      Re: EBC-A20 Battery Testing machine capacitor failure on buck converter part of board

      Update on the unbalanced battery packs that I bought from Battery Hookup I got a refund for the 7 battery packs ( out of the 8 of them that I bought minus the shipping cost ) packs that had lost 30% or more of there useful life and there charge/discharge curves look like crap
      Attached Files
      Last edited by sam_sam_sam; 09-30-2022, 11:30 PM.
      9 PC LCD Monitor
      6 LCD Flat Screen TV
      30 Desk Top Switching Power Supply
      10 Battery Charger Switching Power Supply for Power Tool
      6 18v Lithium Battery Power Boards for Tool Battery Packs
      1 XBox 360 Switching Power Supply and M Board
      25 Servo Drives 220/460 3 Phase
      6 De-soldering Station Switching Power Supply 1 Power Supply
      1 Dell Mother Board
      15 Computer Power Supply
      1 HP Printer Supply & Control Board * lighting finished it *


      These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

      1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
      2 Hem Saw Computer Stack Board

      All of these had CAPs POOF
      All of the mosfet that are taken out by bad caps

      Comment


        #23
        Re: EBC-A20 Battery Testing machine capacitor failure on buck converter part of board

        Originally posted by sam_sam_sam View Post
        Well I had some time to move everything from one enclosure to the other enclosure so now I have the two EBC-A20 with the switching power supply now I just have to put some banana power jacks on the back of the enclosure so I can use the switching power output for buck converters
        The transplant from one enclosure to the other enclosure was a success now I just have to have some time to finish up the banana jacks to the 12 volt 8 amp switching power supply to power the XL4015 buck converter with the voltage/current controller with the voltage/current monitoring meters
        9 PC LCD Monitor
        6 LCD Flat Screen TV
        30 Desk Top Switching Power Supply
        10 Battery Charger Switching Power Supply for Power Tool
        6 18v Lithium Battery Power Boards for Tool Battery Packs
        1 XBox 360 Switching Power Supply and M Board
        25 Servo Drives 220/460 3 Phase
        6 De-soldering Station Switching Power Supply 1 Power Supply
        1 Dell Mother Board
        15 Computer Power Supply
        1 HP Printer Supply & Control Board * lighting finished it *


        These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

        1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
        2 Hem Saw Computer Stack Board

        All of these had CAPs POOF
        All of the mosfet that are taken out by bad caps

        Comment


          #24
          Re: EBC-A20 Battery Testing machine capacitor failure on buck converter part of board

          Update using the eight channel battery testing machine

          I bought a case of 100 of these batteries

          https://batteryhookup.com/products/c...-batteries-new

          I tested a little over half of them milliamperes hours are little bit all over the place

          From 1100 to 1190 not exactly the same and few of the milliamperes are there but the voltage/current graph are all over the place so I have marked these cells to keep them together in a project

          One note is that they are only rated for 1100 milliamperes hours so they are what they say they are it
          If you are planning on using them with a BMS balancing protection the closer you can get the amperage hours to be the better the performance is out of the battery pack will be

          Most of the time when you test battery from a batch of them the amperage hours will very close to exactly the same result with these are not like this they vary a quite a bit

          Awhile back I mentioned that I have a battery jumping battery pack that the battery when bad and I going to use some lithium batteries instead the sealed battery pack that was in it I am going to use a 30 amp BMS balancing protection board and the bost converter that I also mentioned a while back as well
          Last edited by sam_sam_sam; 03-11-2023, 02:16 AM.
          9 PC LCD Monitor
          6 LCD Flat Screen TV
          30 Desk Top Switching Power Supply
          10 Battery Charger Switching Power Supply for Power Tool
          6 18v Lithium Battery Power Boards for Tool Battery Packs
          1 XBox 360 Switching Power Supply and M Board
          25 Servo Drives 220/460 3 Phase
          6 De-soldering Station Switching Power Supply 1 Power Supply
          1 Dell Mother Board
          15 Computer Power Supply
          1 HP Printer Supply & Control Board * lighting finished it *


          These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

          1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
          2 Hem Saw Computer Stack Board

          All of these had CAPs POOF
          All of the mosfet that are taken out by bad caps

          Comment

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