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Thread: lvc on xl5??

  1. #1
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    lvc on xl5??

    I was running my slash and after about 35min or so only the steering worked so i took the battery put it on my onyx 230 and it read 6.3v. Just wondering why it acted like there was a cutoff.
    Slash 4X4, Blitz ESE, Motocross, Mtn. Biking

  2. #2
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    Does not have one, you killed the lipo, you went below 3.3 v per cell.

    EDIT: you may have gotten lucky and your lipo survived
    Last edited by Nitro792; 11-06-2009 at 09:54 PM.
    SLASH IS FIXED!!!!!!!!!!!!

  3. #3
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    i think thermal shutdown might do that. it came just in time, too. you're likely still safe, but please get an LVC like a novak smartstop. we don't want your house burning down because of an over-discharged lipo

  4. #4
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    Novak Smart Stop doesn't work with the later blue case XL-5.

    Joe
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  5. #5
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    you need a lva (low voltage alarm)

  6. #6
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    Rustler|Brushless Losi XXL

  7. #7
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    Just a quick input that I "think" is correct. I'm almost positive lipo cells can be taken down to 3.0 volts per cell and not have any problems. I believe 3 volts is the threshold for it. Most so have LVCs in the 3.2-3.4 range but 3 will not cause damage. I run mine at 3.2 and never have had any issues.
    Slash VXL
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  8. #8
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    WOW a lot of false info here. Number one, a lipo cell can be discarged to 2.89v/cell under load, or 3.2v/cell after sitting for 15-20 mins. Second, your lipo will not catch on fire because you discharge the pack too far. The worst that can happen is that it swell, and the pack not balance properly anymore. The further a lipo is discharged, the less likely it is to be a fire hazard. The only way for a lipo to smoke or catch fire is:

    -puncture
    -dead short-
    -internal short (cells fold in crash)
    -overcharge
    -overheat (200+)

    This is not saying that there are not consequences for over discharging or similar, as they can ruin your pack, or put it at higher risk for one of teh things that can cause a fire like a puncture, or not balancing correctly and overcharging.

    Now, the reason your speedo did this is that you prolly hit thermal shutdown, or the lipo was discharged enough that the motor would no longer go.
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  9. #9
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    Who said he was running a lipo?
    I get warning points just for having them.

  10. #10
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    Sorry, I was using a lipo 5000mah, forgot to add that. I was told not to go below 6.2von a 2 cell. My pack didn't swell , and it wasnt hot. I had a novak cutoff on my old slash and it made the accerate kind of jerky and not smooth.
    Slash 4X4, Blitz ESE, Motocross, Mtn. Biking

  11. #11
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    Thanks moose for clearing that up. I just read some say never to take it below 3.3 a cell and knew around 3 was the safe threshold for it.
    Slash VXL
    Summit VXL
    they have to share for now

  12. #12
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    Quote Originally Posted by Brushless Moose
    Second, your lipo will not catch on fire because you discharge the pack too far. The worst that can happen is that it swell, and the pack not balance properly anymore.
    it would if he unknowingly put it back on the charger

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