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What are these 2 "extra" red wires for? Li-Ion RC Battery

Discussion in 'Power Electronics' started by Analysetech, Jan 22, 2018.

  1. Analysetech

    Analysetech

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    Jan 22, 2018
    1516623481940869226512.jpg 1516623481940869226512.jpg 1516623571944662476205.jpg 1516623481940869226512.jpg I am planning to re adapt a transformer used for charging a phone with a INPUT: 100-240V - 50/60Hz 0.3A, OUTPUT: +12V ----- 1.0A rating by cutting off the female connector and replacing it with a 4 pin male one to fit with the battery shown because the original charger that came with the Easystar 2 package has disappeared, but I don't know what these two red cables connect to/what their functions are, please help? Is it feasible to do this in the first place? I know 1516623886397734577330.jpg 15166239525351493239007.jpg that with this rating if I succeed on replacing the connector, I could safely charge 1.5 hours right?
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    As it states on the battery: Standard MPX type balancer connector
    A balancer is required when charging LiPo's to ensure equally charged cells within the battery stack.
    You should not use the wall wart as shown. You risk a drastic reduction in lifetime of the battery plus possibly destruction in a clud of fire and smoke.
    Get a suitable charger with built-in balancer matching the connector on this battery.
     
    Analysetech likes this.
  3. BobK

    BobK

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    Jan 5, 2010
    If the likes of Apple, Samsung, and Boeing cannot charge Lithium Ion batteries without setting them on fire, what makes you think you can?

    Bob
     
  4. Audioguru

    Audioguru

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    Sep 24, 2016
    The battery has three Li-PO cells. It is 12.6V when fully charged and averages 11.1V during a discharge.
    The 4 wires plug into a balanced charger with a wire for each cell plus a common 0V wire. The two wire plug is its high power output.
    A balanced charger prevents each cell from overcharging and limits the current. Your idea will probably cause a spectacular explosion!
     
    Analysetech likes this.
  5. Analysetech

    Analysetech

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    Jan 22, 2018
    I understand now, thanks very much for the explanation, I thought it could be something important to know and that is why I asked in the first place! I guess I will have to save up and buy the charger again.
     
  6. WHONOES

    WHONOES

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    May 20, 2017
    LiPo batteries are very commonly used by the model aero, car, boat fraternity. Therefore there is a fairly large number of charge management devices available at sensible prices with all sort of paraphernalia to accompany them. Have a look on the Hobbyking web site.
    A cautionary note: Do not attempt do build a LiPo charger unless you know exactly what you are doing.
    Also ref' reply #2 i would like to know what a clud is.
     
  7. Minder

    Minder

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    Apr 24, 2015
    $16.00 on Ebay 361912375476
    M.
     
  8. WHONOES

    WHONOES

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    May 20, 2017
    Yup, that looks as though it should fit the bill. How do they do it for the money. I couldn't buy the bits for that price.
     
  9. Minder

    Minder

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    Apr 24, 2015
    Got one and it works great, I have the mains or 12vdc fed version for use in the field.
    M. (Ex-Oxonian!).
     
  10. 73's de Edd

    73's de Edd

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    Aug 21, 2015
    Herr YOU-NOW-NOES. . .

    " clud " . . . . . icht bin undt " C'herman " . . . cloud.
     
  11. WHONOES

    WHONOES

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    May 20, 2017
    Fraid not cloud is cloud unt german at least according to google translate it is. If my wife was still with us I would ask her. Or more accurately unt deutsche.
     
  12. 73's de Edd

    73's de Edd

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    Aug 21, 2015
    Repeating again . . . .one mo' time . . . . CLOD . . . IS . . . . CLOUD . . . .if you have made a fast typo.
     
    Last edited: Jan 31, 2018
  13. Minder

    Minder

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    Apr 24, 2015
    I think we get the drift!:rolleyes:

    M.
     
  14. WHONOES

    WHONOES

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    May 20, 2017
    Ah, but the typo was clud not clod. Connotations eh.
     
  15. Bob Johnson

    Bob Johnson

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    Feb 19, 2018
    Clouds are white fluffy things that float in the sky on a nice tranquil day. Cluds are them great thumping thunderous black woppers that rain and hail on you when on the way to the shop! Clods are what you bring into the house after being out in the Clud storm! And Clogs are what you bring the Clods in on! Hope this helps!
     
  16. Bob Johnson

    Bob Johnson

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    Feb 19, 2018
    I recently tried to charge one of those High Amperage car starter packs. With the charger that came with it I stress! After 40 minutes the case of the unit split apart and the battery was twice normal size! Fortunately it didn't do anything more drastic and I was there to turn it off. The battery is now kaput! A 40+ C day did not help I assume?
     
  17. Bluejets

    Bluejets

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    Oct 5, 2014
    we call Clogs, Clod-hoppers if they're big 'uns.(just to confuse the issue)
    That's Qld for you...hehehehe
     
  18. Hopup

    Hopup

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    Jul 5, 2015
    I recommend buying quality charger for lipos, not some cheap chinese one. If you have seen how they explode you don't want to play with them at all.
     
  19. WHONOES

    WHONOES

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    May 20, 2017
    Like your sense of humour.
     
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