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how to connect balancer charger to 18650 pack

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  • how to connect balancer charger to 18650 pack

    hello

    how can i connect this balancer charger to 18650 pack
    it are 3 cells in serie the holder has one plus and one minus cable
    the connector on charger has four pins
    has that connector a name?

    Click image for larger version

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    regards bernd

  • #2
    helo again

    found something, maybe this way
    Click image for larger version

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    its a xh balancer charger plug?

    greetings bernd

    Comment


    • #3
      What you found is the way to ruin cells. NEVER charge cells in series if possible. Get a charger that charges individual cells, take them out of the holder and charge them. If one cell charges before the others, you'll reverse-charge one or more of them, resulting in a nice red piece of junk.

      Comment


      • #4
        thanks rukbat

        the way you recommend is the one i do since i begone usind 18650 cells
        but my wish was to insert cells into control box
        and not to take them out every time for charging

        but also i fear to blast my detector box with overcharged cells

        ok i must search another solution

        regards bernd

        Comment


        • #5
          Originally posted by Rukbat View Post
          What you found is the way to ruin cells. NEVER charge cells in series if possible. Get a charger that charges individual cells, take them out of the holder and charge them. If one cell charges before the others, you'll reverse-charge one or more of them, resulting in a nice red piece of junk.
          That may the case in an ideal world, but in reality virtually every piece of equipment with a rechargeable battery pack performs the charging with the cells in series.

          Comment


          • #6
            You have 4 pins for the balance charger.

            3 individual positives, one for each cell.
            1 ground to be used for all cells

            You can solder additional wires into your battery pack to plug into the balance port.

            You also have a balance plug for a "2S" (2cell) pack that is similar, 2 positives, 1 ground for both cells.

            This is how the charger controls the charge rate of each individual cell.

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            • #7
              This may give you a clue

              http://www.gwsus.com/images/note%20book/e_c3lp.jpg
              Attached Files

              Comment


              • #8
                No that is wrong, read my reply.

                The one negative goes to all negative terminals parallel.

                Each battery gets its own individual charge lead. (positive)

                Comment


                • #9
                  Like this,
                  Attached Files

                  Comment


                  • #10
                    Originally posted by 6666 View Post

                    This is not a balance charger and the schematic is wrong. Not trying to be a ****, but these suckers will really burn if miss-treated.

                    Comment


                    • #11
                      Originally posted by Qiaozhi View Post
                      That may the case in an ideal world, but in reality virtually every piece of equipment with a rechargeable battery pack performs the charging with the cells in series.
                      The better ones at least diode-isolate the cells. The really good ones charge the cells individually.

                      Cheap junk will always be cheap junk, no matter how much it sells for.

                      Comment


                      • #12
                        Hi Rukbat I know what your saying and you are kind of right, BUT

                        All of the model aircraft chargers for muticell packs monitor each cel during charge.

                        So if one cell tries to go above 4.2v it loads that cell during charge so its terminal voltage does not go above 4.2v


                        So there is no reason to feal this modern charger balancer.

                        The cells Bernte has are the A123 style and are Lithium IRON LiFe and are extremely safe.

                        Lithium Polymer can fail and burn up if charged incorrectly, or if loaded beyond their discharge capacity.

                        Giant cod has the charger multiway plugs.

                        I make up 3 cells with the charge lead - then glue cels - side by side and place pvc type heatshrink over ~ 2 layers = You must leave the charge plug hanging out to easily plug into charger. I have a main power cord and plug too hanging out of the pack.

                        When I detect my cell pack is in my pocket and plugs into the front of the control box.

                        Lighter for 6hours of swinging
                        S

                        Comment


                        • #13
                          Originally posted by UFO View Post
                          Like this,




                          THIS IS WRONG

                          If you measure between the first and last pins of the balance plug on a LiPo you'll get the full rated voltage. If you keep the ground probe on the ground pin, and move the positive probe across the pins on the balance plug, the voltage will increase by about 4.2V per cell when the LiPo is fully charged.

                          THE WIRING DIAGRAM YOU HAVE PROVIDED IS FLAT OUT WRONG AND DANGEROUS FOR A LIPO CHARGER.

                          In your wiring diagram, measuring the voltage on the first and last pins would only read the voltage of a single cell.

                          The other diagrams provided are correct.

                          Originally posted by UFO View Post
                          This is not a balance charger and the schematic is wrong. Not trying to be a ****, but these suckers will really burn if miss-treated.
                          That is a balancing charger for LiPo batteries, any charger that uses the 4 pin and 3 pin balancing plugs are balancing chargers. Normal high speed chargers have a positive and negative that connect to the main terminals of the battery.

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