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  1. #1
    RC Turnbuckle Jr.
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    TQ 2.4GHz - LiPo Mod

    Hello Guys,

    With this mod you can use a 3S LiPo battery on the transmitter... I already posted this on the E-Revo Brushless forum, but inside another thread...

    This will void your warranty and I'm not responsable if you ruin your transmitter...

    First, I opened the TQ, removed the battery holder and the circuit board and removed both wires (red/black) that come from the battery holder...



    Then, I soldered a 3S voltage monitor from ********* to those two pads...



    And, installed a Futaba male connector where the original wires were before...



    I installed everything back in, and put the voltage monitor on the right side of the grip...



    And, this is how it looks with the external connector and the LiPo installed... I removed all the springs to make it look better...



    This is the LiPo: http://www.*********.com/*********/s...idProduct=9787

    This is the LVA: http://www.*********.com/*********/s...idProduct=7223

    And, this is how it sounds when I turn it on...



    I'm getting 20 hours of runtime with this single 3S LiPo battery (1450mAh) and it only weights like 4 NiMh AA batteries...

    Hope you like the upgrade...

    Daniel.

    Last edited by danielhr77; 01-05-2010 at 06:11 PM.
    200, 202, 420, humor 404, 301 to rc10talk, 410.

  2. #2
    RC Turnbuckle Jr. NStampede Freak's Avatar
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    I am thinking of doing this to some AM TQ's. Tired of dealing with 8 heavy nimh cells.

    The problem is that ********* is always out of stock of things you really need.
    N Stampede 2.5R
    E Stampede VXL
    Tmaxx 2.5

  3. #3
    RC Qualifier PeterV's Avatar
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    Heads up, don't make this mod with your Traxxas Link TQ 2.4GHz transmitter--it runs on 4 AA cells (6 volts), so a 3S pack will smoke it. A 2S pack (7.4 volts) is also too much.

  4. #4
    RC Turnbuckle Jr.
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    You're right!!! I did this a few weeks ago when the Traxxas Link TQ 2.4Ghz wasn't out there yet.. Thanks PeterV!!!

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  5. #5
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    say you wanted to do it to a traxxas link system, couldnt you put some god resistors in there and bring the voltage down? also, how can you see the light to know when the voltage is low?
    what was that? what was what..oh that. thats mine.

  6. #6
    RC Turnbuckle Jr.
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    Quote Originally Posted by zrau17
    say you wanted to do it to a traxxas link system, couldnt you put some god resistors in there and bring the voltage down?
    It's not the best way, if it can handle 5 volts you can use a BEC... But, the point of this mod was to cut in half the weight of the 8 AA batteries... The 20 hours of run time was a bonus... And, the new TQ 2.4GHz Link already works with 4 batteries...

    Quote Originally Posted by zrau17
    also, how can you see the light to know when the voltage is low?
    I can't, but I can hear the buzzer, and that's the time to stop driving...

    Last edited by danielhr77; 01-18-2010 at 04:14 PM.
    200, 202, 420, humor 404, 301 to rc10talk, 410.

  7. #7
    RC Champion
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    i would just pick up some rechargable AA Nimhs, personally

  8. #8
    RC Turnbuckle Jr. Nitronaught's Avatar
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    Quote Originally Posted by Super Dude
    i would just pick up some rechargable AA Nimhs, personally

    I have to agree, my radio lasts a really long time even with rechargeable AA's.
    Founder of H.U.A.
    Hop Ups Anonymous

  9. #9
    RC Turnbuckle Jr.
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    Yes, but they weight twice as much if you use 8 of them...

    200, 202, 420, humor 404, 301 to rc10talk, 410.

  10. #10
    RC Racer
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    what about a 2s life pack 6.6v will this work or too much still?

  11. #11
    RC Qualifier
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    nice mod. what's your soldering setup like?
    Piercings can and will get caught in antenna tubes

  12. #12
    RC Turnbuckle Jr.
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    Quote Originally Posted by hexitnow
    nice mod. what's your soldering setup like?
    Taiyo 20/200w soldering iron with ceramic tip...

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  13. #13
    RC Champion
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    If you really want a lipo in your 2.4ghz traxxas link radio, you can simply use an external BEC to regulate the voltage to 6v.

    I also did the mod a couple months back to my normal 2.4ghz TQ. I love the weight improvement and extended usage without charging
    infowars.com

  14. #14
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    TQ 2 4GHz LiPo Mod

    Looks like a winner I will get one on order today and report back. The only part I have to replace is the outer plastic part that holds the antenna to the case.

    Many Thanks Power

    ..Rock..

  15. #15
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    Great Guide Daniel!

    thanks a lot, I'll do this on my mini-revo TQ

    Do you also know if I can do the same with the HPI TF-3 Tx?

    I don't know how it is maden inside

    Many thanks
    Vito

  16. #16
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    Sorry guys

    maybe I missed something:

    This mod is for THE OLDER normal TQ - 2 channels (was included in my minirevo; it is with retractile antenna and has 8 AA stilos batteries)

    or for the NEW TQ 2,4 one with small antenna??

    My TX is this:



    Do I need a UBEC or something else like that?

    Thanks to everyone

  17. #17
    RC Turnbuckle Jr.
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    It's for any transmitter that uses 8 AA batteries...

    It will not work on the new TQ Link 2.4Ghz that comes with the Slash 4x4...

    200, 202, 420, humor 404, 301 to rc10talk, 410.

  18. #18
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    Quote Originally Posted by PeterV
    Heads up, don't make this mod with your Traxxas Link TQ 2.4GHz transmitter--it runs on 4 AA cells (6 volts), so a 3S pack will smoke it. A 2S pack (7.4 volts) is also too much.
    Since peak voltage of a AA alkaline battery is 1.72v or so, Link TQ 2.4GHz can handle 4.88 volts or so without a problem, right? So a total of 1.7v*4=6.8volts.

    So would using 6.6v LiFePo4 which would have a peak voltage of 7.2v. Would this be safe to use with this radio?

  19. #19
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    I wouldnt risk it xxgg. You could get a one cell lipo and use something like this with it: http://www.*********.com/*********/s...idProduct=7884
    Are you an RC addict?

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