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SXT Light E-Scooter Not Charging: Sparks Appear with 37.4V 3.5A Charger, Original Charger Specs?

Zetxx 22749 25
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  • #1 18011909
    Zetxx
    Level 6  
    Hello, I bought a scooter by SXT model Light (as far as I know it is the same as E-TWOW S2 Booster). I bought a charger online and here is the problem. When I want to charge it and put the tip into the charging socket, sparks appear (quite large). What could it be caused by? The seller assured that it will fit this model. However, the battery does not charge. My scooter battery: 33V 6.5 Ah. Charger output voltage 37.4V 3.5A. Is this charger even good? Maybe someone here has such a scooter model and can tell me what the original charger has?
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  • #2 18012026
    icosie
    Level 34  
    First to the charging socket, then to the socket (230V). A charger adapted to charge LiPoly?
  • #3 18012289
    Zetxx
    Level 6  
    That's what I did, first the socket, then the contact. It sparks even without being connected to the socket when I insert the tip into the socket. Original charger. Only now the question, maybe something wrong with it (reverse polarity?) Or maybe it's the fault of the battery or something else?
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  • #4 18014418
    icosie
    Level 34  
    You need to check the voltage and polarity at the charger output.
    You will need a multimeter for this.
    Measure, check and present the results.
    Regards
  • #5 18026541
    Anonymous
    Level 1  
  • #6 18027030
    Zetxx
    Level 6  
    The charger has a built-in LED that did not light up at all at first. After a while it lit up red (i.e. it signaled that the battery was discharged). I didn't try to charge it for a long time because it wouldn't turn on anyway and it should.
  • #7 18027524
    Anonymous
    Level 1  
  • #8 18028298
    Zetxx
    Level 6  
    I'm just after moving so it's temporarily lost somewhere, but in case I need to borrow or buy a new one. But what to do first?
  • #9 18028344
    gumisie
    Level 43  
    Zetxx wrote:
    But what to do first?
    For taking photos of this charger (type plate), etc.
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  • #10 18542318
    Zetxx
    Level 6  
    Hello, the season is coming and the scooter is still not working. I'm waiting for a new charger. I measured the voltage directly on the battery (Li-on 33v 6.5ah) and it is 36.2v, I also checked the fuse, it is intact. Does this voltage indicate a good battery?
  • #11 18543557
    slawko_k
    Level 35  
    Does the scooter run?
    Shows full battery on display?
    Have you tried discharging it a bit and then trying to recharge it?
    It is normal for a small spark to flash when connecting the charger.
  • #12 18544194
    Zetxx
    Level 6  
    The scooter does not run and does not turn on. Previously, the battery was 100% charged. At some point it turned off and stayed that way. What else can I possibly measure and check?
  • #13 18544199
    Krzysztof Kamienski
    Level 43  
    Zetxx wrote:
    and is 36.2v, I also checked the fuse, it is intact. Does this voltage indicate a good battery?
    Kind of, but not quite. It was necessary to measure after turning on the ignition and turning the handle, i.e. under load. Then we'll see what's next. does the light work?

    Zetxx wrote:
    I'm waiting for a new charger
    Why, if the batteries are almost fully charged.
  • Helpful post
    #14 18544265
    gumisie
    Level 43  
    Zetxx wrote:
    Previously, the battery was 100% charged. At some point it turned off and stayed that way. What else can I possibly measure and check?
    Controller :?:
  • #15 18544388
    slawko_k
    Level 35  
    The description shows that you don't have a problem with the charger, only with a damaged scooter.
    Diagnostics and repair.
  • #16 18544441
    Zetxx
    Level 6  
    The light does not work, generally no reaction. I would also bet on the controller or the switch. Can I put a light bulb on the battery to measure the voltage under load? I bought a new charger because at first I thought something was wrong with it. And is there an option that the battery was not charged for a long time and individual cells died?
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  • #17 18544880
    gumisie
    Level 43  
    Zetxx wrote:
    And is there an option that the battery was not charged for a long time and individual cells died?
    How could it fail if:
    Zetxx wrote:
    I measured the voltage directly on the battery (Li-on 33v 6.5ah) and it is 36.2v,
    Zetxx wrote:
    I can charge the batteries with a light bulb,
    Yes, 3 x 12V connected in series.
  • #18 18545218
    Zetxx
    Level 6  
    Ok, then if the battery is good, then the driver is probably dead. One more question, if the driver is already dead, is the power automatically cut off? Even when the charger was plugged into the socket, the scooter would not turn on.
  • #19 18545709
    slawko_k
    Level 35  
    I've never seen a load going through the driver. Always straight to the battery. So the driver does not affect the loading. I don't know how it is in yours because I haven't had one in my hands.

    Just take measurements to determine anything or give it to someone who will.
  • #20 18545808
    Zetxx
    Level 6  
    I took measurements and the controller showed too low voltage. I took it apart and found that one of the capacitors had failed. I will try to replace it and if not, I will buy a new one and it should be after the problem.
  • #21 18545820
    gumisie
    Level 43  
    Zetxx wrote:
    I took it apart and found that one of the capacitors had failed
    Send a photo.
    As long as you can. :?:
  • #22 18545852
    Zetxx
    Level 6  
    SXT Light E-Scooter Not Charging: Sparks Appear with 37.4V 3.5A Charger, Original Charger Specs?

    Added after 2 [minutes]:

    Maybe resuscitation will help, we'll see.
  • #23 18545866
    Krzysztof Kamienski
    Level 43  
    slawko_k wrote:
    Always straight to the battery
    You are sure ? Because I don't.
    SXT Light E-Scooter Not Charging: Sparks Appear with 37.4V 3.5A Charger, Original Charger Specs?

    Zetxx wrote:
    I took it apart and found that one of the capacitors had failed.
    How did you find out? Give the measurement methodology. Buddy, the matter is simple - broken MOSFET transistors in this driver, that's why broken, because you gave too much rock :cry: maybe even uphill. And it happened.
  • #24 18545918
    Zetxx
    Level 6  
    Eye methodology ;) So what to prepare for a new driver without messing around?
  • Helpful post
    #25 18545950
    Krzysztof Kamienski
    Level 43  
    @Zetxx Rather yes.
  • Helpful post
    #26 18545985
    gumisie
    Level 43  
    Krzysztof Kamienski wrote:
    @Zetxx Probably yes.
    I confirm.
    It will be cheaper to buy a new driver than to repair it (at this level of knowledge).
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Topic summary

The discussion revolves around an SXT Light E-Scooter that is not charging properly with a new charger, which produces sparks when connected. The user reports that the charger has an output voltage of 37.4V and a current of 3.5A, while the scooter's battery is rated at 33V and 6.5Ah. Several participants suggest checking the voltage and polarity of the charger using a multimeter, as well as verifying the condition of the battery and the scooter's controller. The user discovers that the battery voltage is 36.2V but the scooter remains unresponsive, indicating potential issues with the controller or battery cells. Ultimately, the user identifies a failed capacitor in the controller and considers replacing it or purchasing a new controller to resolve the issue.
Summary generated by the language model.
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