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-   -   Evx - Lvc (https://www.rc-monster.com/forum/showthread.php?t=5759)

Bomb-Proof 02.18.2007 12:27 PM

Evx - Lvc
 
I have seen a few people doing the LVC and it looks a little iffy to me the way they are doing it. With the 4s LVC, not running a Rx pack you will have one battery draining more than the other. Whats going to keep that pack from draing past the LVC if the other pack is higher voltage to compensate? Seems like it needs two LVC's, but that could be a potential issue as well.

Serum 02.18.2007 12:53 PM

Using two LVC's isn't the way to to go.

I personally am only using an external bec.

But; You can buy lvc's that monitor the individual cells. this would eliminate the problem as you are describing it.

check the cellshield from dimensionengineering;

http://www.dimensionengineering.com/

BTW topic moved to general electric.

Bomb-Proof 02.18.2007 12:59 PM

yea, the individual cell monitor is ideal.

Serum 02.18.2007 01:03 PM

And since they do exist, you can use them.

http://www.rc-monster.com/forum/showthread.php?t=3825

here, i was just as enthusiastic about them as you are

Bomb-Proof 02.18.2007 01:52 PM

Pretty cool, is there any issues running the dimension one with cars? (says not for car use).

Serum 02.18.2007 02:28 PM

Well; they are coming with a car-version. metalman knows more about this.

MetalMan 02.19.2007 02:53 AM

Dimension doesn't really have any interest in developing the CAR version. I tried to get them to do it, but they apparently have "better" things to do.
I have the only known CellShield made for car use. It's a beta version, so it isn't perfect. Unfortunately John from Dimension Engineering seemed to stop responding to me while I was testing the device.

As it is, I no longer use the CellShield CAR version. It's got a few problems from what I have found:
-slow response to voltage depression (in cars, voltage depression is quick, and it can't keep up)
-resets as soon as you hit neutral (not a good thing when you potentially have expensive batteries resting on its judgement)

What I do like about it:
-easy to use (no polarity)
-adjustable cutoff voltage from 2v-3.5v
-up to 6s (I only use 5s)
-cheap (mine's a beta so it was free :p )

If you guys contact Dimension Engineering and request the CellShield CAR version be produced, then I can try to continue testing mine and reporting to John to make it even better.

jhautz 02.19.2007 03:32 AM

Is there an issue with the standard Cell Shield in a car application? Whats the difference between the car version and the regular verson?

MetalMan 02.19.2007 12:35 PM

It's made for an airplane (same issue we car guys have with other airplane LVCs). Airplanes have neutral throttle with the stick all the way down, and we have it at a point between forward and full brake/reverse.

Bomb-Proof 02.19.2007 12:36 PM

I believe the standard version will go to full brake or even worse full reverse when the low voltage kicks in.

*you beat me to it metal...*


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