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  1. #1
    RC Qualifier
    Join Date
    Jan 2014
    Location
    Ohio
    Posts
    322

    3s lipo?, 4s lipo?

    I bought a used E maxx and it works great with 2s lipo's in my grass, Does wheely's at will, motor temp fine.
    What would i expect from 3s or 4s? This thing is already faster than my other traxxas cars in the grass. Is it worth going to 3s? Thanks; Don

  2. #2
    RC Racer
    Join Date
    Jun 2013
    Posts
    122
    Temperatur will rise but the truck will get more speed and power and most will say more fun.

    You can not run more than 4 s because the esc can not take more than 4 s if you have the brushed esc or version and the internal bec can not take more than 2 s so you can not run a 3 s batteries
    Last edited by cooleocool; 07-07-2014 at 09:13 AM. Reason: merge

  3. #3
    RC Qualifier
    Join Date
    Jan 2014
    Location
    Ohio
    Posts
    322
    Mine has the EVX2 esc. Thanks for the information. Mine is a model 3905. the manual says the BEC voltage is 6 volts from the EVX2. Don
    Last edited by dontrinko; 07-07-2014 at 06:30 AM.

  4. #4
    RC Competitor
    Join Date
    Apr 2013
    Location
    Wisconsin
    Posts
    77
    You are saying that you are running 2 2s lipos and since the esc is wired in series, this adds up to 4s. If you have the EVX-2 version, this is the highest you can go. With two 3s batteries, which is i think what you are considering doing, would add up to 6s and that is not recommended for the EVX-2. If however, you have the Mamba Monster ESC, then 6s is fine, but don't try using 2 4s batteries in series, 8s is just TOO much for just about any system!

    Also, I would NOT run 2 lipos with different capacities at the same time. You may damage your lipos and we all know how expensive they are!

    Hope this helped!

  5. #5
    RC Qualifier
    Join Date
    Jan 2014
    Location
    Ohio
    Posts
    322
    I did not know the batteries were in series. This explains why it is so fast.
    I am care full not to fully discharge the lipos and I do have several of the lipo alarms I can use.
    Instead of buying a couple 3s I will but a 2s to match one of mine. Thanks; Don
    Last edited by dontrinko; 07-07-2014 at 01:17 PM.

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