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Thread: Bad Turnigy 3s ??

  1. #1
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    Default Bad Turnigy 3s ??

    I bought 2 of these along with the 2s versions..
    http://hobbycity.com/hobbycity/store...idProduct=9515
    and they had awesome power in my MM and UL-1! I ran them once and put about 2200mah back into the packs.. Today I was testing the 8XL that went bad last week and I heard one of these packs make a slight snap sound, and lost all power?
    I can smell a slight burnt smell coming from the pack, only ran about 30sec at slow speed nothing got hot, and now nothing from the pack.
    I used a voltage checker and I can get 4.14v from one a two cells but nothing on the third?
    Help, can this pack be sent back or should I cut open the end and see if I can fix it?

    Thanks
    Last edited by Brushless55; 09-13-2009 at 11:33 AM.

  2. #2
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    Not sure how you could fix it? I have the same packs and I love them! What was wrong with the 8xl?How many volts are you running through an 8xl? On which boat was it and what prop?

  3. #3
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    Quote Originally Posted by Rumdog View Post
    Not sure how you could fix it? I have the same packs and I love them! What was wrong with the 8xl?How many volts are you running through an 8xl? On which boat was it and what prop?

    I was running it on 4s then tried 5s with a CF42 for only a couple minutes, in my Mean Machine... ran awesome on 5s and did not get very hot

  4. #4
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    Anyone?

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    Question LiPo

    Quote Originally Posted by Brushless55 View Post
    I bought 2 of these along with the 2s versions..
    http://hobbycity.com/hobbycity/store...idProduct=9515
    and they had awesome power in my MM and UL-1! I ran them once and put about 2200mah back into the packs.. Today I was testing the 8XL that went bad last week and I heard one of these packs make a slight snap sound, and lost all power?
    I can smell a slight burnt smell coming from the pack, only ran about 30sec at slow speed nothing got hot, and now nothing from the pack.
    I used a voltage checker and I can get 4.14v from one a two cells but nothing on the third?
    Help, can this pack be sent back or should I cut open the end and see if I can fix it?

    Thanks
    Sounds like the tag that comes out of each cell - One of these could have broken and will cause a open circuit.

  6. #6
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    would it just be faster to fix it than try and return the battery for a different one?

  7. #7
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    You didn't state how long you have had these? Are they still under warranty? Do not try to fix as if you open them you will void any possible warranty . Contact Hobby City and see if they may be exchanged. If not then you can try to open and possibly fix them like Team said a tab may have burnt out. That is what I would do.

    Good luck!

    ~Peace.

  8. #8
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    As of today, 1 week

  9. #9
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    I would check with Hobby City to see what their take would be on the pack. I love my Turnigy 2s1p 5000mah packs. I have over forty cycles on one pair and still going strong.
    It does sound like one of the tabs is broken. My only worry would be what caused it.....since you smelled some heat. It's not a hard fix, but it may puff the next time you use it if you fix the tab and carry on.....the smell is what tips it for me.

  10. #10
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    If I don't hear from them soon, I'm going to cut into the lipo and fix the issue..
    I hope a simple solder job will get it going.

  11. #11
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    You cant solder the tabs if it is that that broke. They are aluminum and you need very special solder called aluminum paste. Send it back th hc. They are under warranty

  12. #12
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    i also have 2 for my intruder s and love them and have had no problems at all
    THUNDER TIGER OUTLAW,THUNDER TIGER BANDIT
    CARBON FIBER MINICAT HYDRO,MINICAT HYDRO,PROBOAT MISS GEICO,SKUNKWORKS 32" CAT TWIN, H@M VIPER TURBINE ---JEFF WOHLT WIRE DRIVES

  13. #13
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    The question is what was wrong with the 8XL motor. You may have put an undue load on your whole system. I am interested as to how Hobby City respond, keep us up to date.

    Douggie

  14. #14
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    Still not sure what happend to my 8XL?
    When I ran my packs they only got to 90* and only took out about 1700mah.
    Charged just fine, and put these batteries upto my MMM brushless revo, hooked up my 8XL to the esc without load and ran the motor for about 30 seconds up and down, the motor was getting hot, esc very cool and batteries very cool, then I heard a slight snap sound come from the one pack and lost volts from it..
    Hooked up other packs to this and the esc and motor still working..
    HC has not gotten back with me about any warranty yet..
    Last edited by Brushless55; 09-15-2009 at 04:18 PM.

  15. #15
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    Quote Originally Posted by Flying Scotsman View Post
    The question is what was wrong with the 8XL motor. You may have put an undue load on your whole system. I am interested as to how Hobby City respond, keep us up to date.

    Douggie
    Yes this is what Im thinking too, id be inspecting the 8XL to make sure theres not a rogue winding in there touching the rotor or something else bung.

    When you say the 8xl went bad do you mean :

    a. it dropped out of school and started smoking crack
    b. it got its cousin pregnant
    c. it spun the magnets
    d.all of the above
    Matt.
    FE, Nitro and Gas racing in Auckland
    www.rcboats.co.nz

  16. #16
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    That's awesome!

    Well it went dead in the water?
    not sure of its temp because it took me a couple minutes to get it back to shore and I did not have my temp gun on me, but it was hot to the touch
    brought it home and it did not want to turn over, now with some fiddling it runs, makes a squeal and gets hot?

  17. #17
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    hmm sounds all bad dude, I would pull it to bits and have a looksee, the magnets may have imploded.

    here's the how to from OSE


    http://www.offshoreelectrics.com/inf...ao-bearing.php
    Matt.
    FE, Nitro and Gas racing in Auckland
    www.rcboats.co.nz

  18. #18
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    Question 8Xl

    Quote Originally Posted by Brushless55 View Post
    That's awesome!

    Well it went dead in the water?
    not sure of its temp because it took me a couple minutes to get it back to shore and I did not have my temp gun on me, but it was hot to the touch
    brought it home and it did not want to turn over, now with some fiddling it runs, makes a squeal and gets hot?
    Might be that the rotor magnet is slipping on the motor shaft? This has happened to me with a 10Xl.

    Once fixed it was fine.

    Also while can was open I replaced bearings both end with new one's from OSE.

  19. #19
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    I did pull it apart the day I had the issue, and it looked ok..

  20. #20
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    Quote Originally Posted by Team FFRB View Post
    Might be that the rotor magnet is slipping on the motor shaft? This has happened to me with a 10Xl.

    Once fixed it was fine.

    Also while can was open I replaced bearings both end with new one's from OSE.

    How did ya fix it?

  21. #21
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    I have the same batteries. I have had that problem with one of them. I heard a pop but I still have voltage, just one cell is about a half volt off. I balanced them ( took almost a whole day ) but have not used them since.

  22. #22
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    we had the same problem with these same packs ran as 2x3s packs with a 6xl. the thing screamed till the tab on the battery broke. fixed it by simply soldering wire across the packs instead of repairing the tab

  23. #23
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    ^XL on 6s? Thats your problem right there!

  24. #24
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    6xl*

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    Ya! I to want to run my 6XL Revo on 6s..
    Ok looks like I'm cutting into the pack.
    Any one know where I can buy new shrink wrap?

  26. #26
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    yeah ran a 6xl on 3s2p so 6 cells. was a bullet. very hot setup made the sv 27 into a dart lol. i went to charge another of my 3s turnigy packs today and the charger couldnt connect. sure enough on closer inspection one of the tabs had broken. not the fault of the battery, i accidently dropped this battery and the shock of it hitting the ground prob broke it

  27. #27
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    Maybe the true verdict of the cheap chinese batteries is finally coming to pass.
    Mini Cat Racing USA
    www.minicatracingusa.com

  28. #28
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    I read that many people here are happy with the Turnigy and Zippy Flightmax. I was too during the first runs, but now I will never buy them again. Had same problems in one 3s and one 5s Zippys (one cell dead) with no apparent reason, had also two 6s (One Zippy one Turnigy) swallen from water immersion. I had the 6s Turnigy together and parallel with a 6s Flightpower immersed, the Turnigy is useless (swallen) but the Flightpower perfect.
    I also had another situation where I had a Rhino and a Zippy with same specs (3s, 25C, 4900) running in series, the Zippy is useless now (swallen) but the Rhino is fine.
    Twin Cat 135, Sprintcat40 (single-twin), DF 35", Maritimo, Mean Machine, SV 27
    http://www.rcfastboats.com/

  29. #29
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    Quote Originally Posted by Brushless55 View Post
    Ya! I to want to run my 6XL Revo on 6s..
    Ok looks like I'm cutting into the pack.
    Any one know where I can buy new shrink wrap?
    Before you unwrap that lipo, get some of the alum solder and paste. You won't be able to solder the tabs (you can bet that is what happened) with regular solder - it will just bead up. I know this from experience. I have had three different lipos - 3 different manufacturers do this. It is caused by pulling on the leads - either the balance leads or the power cables when taking them out of the boat. Don't do this!! They feel tough and secure, but once you take one apart, you will see how fragile they really are. I am now saving my (bad) cells and will one day buy the aluminim solder/paste and repair them. I've seen it for sale, but don't remember where it was. Sdg.

  30. #30
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    The problem with cheap lipos as with everything else being sold direct out of china is that they buy from the cheapest source each time. So you might get good quality for a while until they run out of stock and then instead of going back to the same manufacturer again, they go looking for the cheapest source. Then when they get the new stock back in, it's crap. Lack of consistency of quality has always been the biggest problem with chinese products.
    Mini Cat Racing USA
    www.minicatracingusa.com

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