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29.4v Chinese li-ion charger

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    #1

    29.4v Chinese li-ion charger

    This charger arrived today for my ebike.

    I had to wire a new bms into the battery pack first as the original giant bms wouldn't work with a generic charger.

    Anyhow I plugged in the charger after connecting the battery and it charged fine.

    I noticed that once it finished charging the the status led on the charger stayed lit green even when the mains power was disconnected.

    I connected it back the mains and there was a loud bang. Charger has blown up

    I've contacted the seller on ebay, I just want your thoughts on the charger in general and wether it would be worth accepting a replacement if the seller offers
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    #2
    Re: 29.4v Chinese li-ion charger

    This is the problem with switching power supply that are made in China there quality controls are hit and miss

    I do not like chargers that do what you described when you unplug it that the charge status indicator stays light like that

    Comment

      #3
      Re: 29.4v Chinese li-ion charger

      Looks like the solder blobs caused a short, WTF!
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      Comment

        #4
        Re: 29.4v Chinese li-ion charger

        Man! what kind of fuse did they installed in F1 location?
        Never stop learning
        Basic LCD TV and Monitor troubleshooting guides.
        http://www.badcaps.net/forum/showthr...956#post305956

        Voltage Regulator (LDO) testing:
        http://www.badcaps.net/forum/showthr...999#post300999

        Inverter testing using old CFL:
        http://www.badcaps.net/forum/showthr...er+testing+cfl

        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
        http://s807.photobucket.com/user/budm/library/

        TV Factory reset codes listing:
        http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

          #5
          Re: 29.4v Chinese li-ion charger

          get your money back and feel lucky your house didn't burn down .

          Comment

            #6
            Re: 29.4v Chinese li-ion charger

            Originally posted by budm View Post
            Man! what kind of fuse did they installed in F1 location?
            "Improved" version of Apple fuse

            Comment

              #7
              Re: 29.4v Chinese li-ion charger

              Originally posted by Spider1211 View Post
              "Improved" version of Apple fuse
              apple fuses are the best, they last decades.
              not like those cheap chinese shit that burn out as soon as you reach the rated current!
              /sarc

              Comment

                #8
                Re: 29.4v Chinese li-ion charger

                i see what happened,
                the board is designed for a box-fuse and they fitted a tiny glass fuse.
                combined with a shorted bridge rectifier (happens),
                the fuse couldnt break the circuit fast enough and it arc'd under the board.

                Comment

                  #9
                  Re: 29.4v Chinese li-ion charger

                  sigh... more chinese noob phails yet again...

                  Comment

                    #10
                    Re: 29.4v Chinese li-ion charger

                    I would get the money back and buy something better.
                    BTW, can see the enclosure so we can see the make and model and the markings?
                    Never stop learning
                    Basic LCD TV and Monitor troubleshooting guides.
                    http://www.badcaps.net/forum/showthr...956#post305956

                    Voltage Regulator (LDO) testing:
                    http://www.badcaps.net/forum/showthr...999#post300999

                    Inverter testing using old CFL:
                    http://www.badcaps.net/forum/showthr...er+testing+cfl

                    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                    http://s807.photobucket.com/user/budm/library/

                    TV Factory reset codes listing:
                    http://www.badcaps.net/forum/showthread.php?t=24809

                    Comment

                      #11
                      Re: 29.4v Chinese li-ion charger

                      Originally posted by budm View Post
                      I would get the money back and buy something better.
                      BTW, can see the enclosure so we can see the make and model and the markings?

                      I second this

                      Comment

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