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Old 07-28-2010, 07:38 PM   #1
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Default Is my lipo still good

I have a hard case lipo and one of the balance wires came off, is it ok to use? Is there a way to fix it?
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Old 07-28-2010, 08:06 PM   #2
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If its an Orion, I would use it and not worry too much about it, Kokam cells seem to stay in balance on their own. Anything else, I'd be worried about cell imbalance beyond running a few more cycles without balancing.

I guess this lipo is wired like a soft case with wires out one end? I'd try to repair it, think its straight forward once you get into the case. The ones with bullets, it really depends on what went wrong when wire pulled out.

If this is a roar type case with their seal, not much you can do and stay legal unless where you bought it will repair it which isn't likely. They'd rather sell you a new one obviously.
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Old 07-28-2010, 09:25 PM   #3
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it is a venom, how do you split the case? Its just for a boat
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Old 07-29-2010, 05:49 AM   #4
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They had to put the lipo in the case, so there is a seam. Prob split long ways across the width. You basically pry it open slowly letting whatever was used to hold it together give as you work it apart. This is the hard part, some hard cases are more agressively glued than others. If it breaks, well, you're going to just glue it back together anyway after repairing.

If you can't see to get it apart, using it until it starts to puff is about all you can do, short of just replacing it. You can reduce the charge rate to attempt to more evenly charge the cells and minimize cell imbalance.

You could call Venom and see what they tell you -

E-mail: [email protected]
Phone: 800-705-0620

Postal Address:
Venom
14028 N OHIO ST
RATHDRUM, ID 83858
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Old 07-29-2010, 06:20 PM   #5
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I think I might be ok, my balance wires go black, blue, red. The red is the one thats broke, I stuck the re in to the positive of the battery and hooked the balancer up, I took voltages and got 2 different ones so may be I am in luck.
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Old 07-29-2010, 07:19 PM   #6
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Believe you solved your prob.

The red balance wire is pack positive and thats the same thing as the pos main power lead so plugging the broken red balance wire into pos main power lead should let balancer work normally.
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Old 07-30-2010, 07:28 AM   #7
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I had it balancing over night and its still doing it
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Old 07-30-2010, 08:56 AM   #8
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Whys it taking so long? Are the 'cell' shown to be that imbalanced? Balancing shouldn't take overnite, hors maybe, but not overnight. Maybe this hook up is not all it was thought to be?

You can check the main power leads for the total voltage and then get one cell's voltage from the remaining balance wires, subtracting the two should give you the other cells voltage. Are they close?

You may have to terminate charging yourself.
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Old 07-30-2010, 11:05 PM   #9
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Venom packs do have a lifetime replacement on thier lipos. If the pack is less than a rear old, and there is no evidence of mis-use, they will replace it for free! If its more than a year old, or you don't have proof of purchase, it is a percentage of the packs new price. I cant remember that percentage off the top of my head, but you can get more info on thier website. I'd be careful about tearing into the pack, as this would most certainly void it's exchangability(is that even a word?)
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Old 08-01-2010, 02:39 PM   #10
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It was working, they where .12 volts different and after overnight they where.004 v differnece
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Old 08-01-2010, 03:50 PM   #11
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Thats a big diff in cells - thats 120mv, most don't get too much more than 30 or 40mv diff.

Why so much difference, has it been a while since they were balanced?
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Old 08-01-2010, 09:58 PM   #12
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It seems to be fine now, I balance every few charges
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