Smoking Batteries (was: Battery problem in our Parkliner) - Page 9 - Fiberglass RV


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Old 05-13-2013, 02:32 PM   #113
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I feel there was a combination of factors, one of which was the improper wiring that caused the first battery to work harder while the second battery was starved. This caused an imbalance between the two batteries over time. However the converter treated them both equally and thus overcharged.
The batteries should be installed in a proper box outside the living space, everyone agrees. The converter should be checked, everyone agrees. To prevent future issues, try rewiring the batteries.
See here for my reasoning SmartGauge Electronics - Interconnecting multiple batteries to form one larger bank
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Old 05-13-2013, 03:11 PM   #114
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Still trying to understand what I'm reading...Question re. your use of the words "improper wiring", Jim. Is that a reference to the way the wires are routed?

To my admittedly untrained eye, the link you just posted appears to illustrate more efficient wiring routing methods- I don't see any indication there that the routing used by Parkliner can/will lead to the kind of catastrophic failure that happened here.

What is this novice missing?

Francesca
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Old 05-13-2013, 03:22 PM   #115
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Quote:
Originally Posted by cpaharley2008 View Post
I feel there was a combination of factors, one of which was the improper wiring that caused the first battery to work harder while the second battery was starved. This caused an imbalance between the two batteries over time. However the converter treated them both equally and thus overcharged.
The batteries should be installed in a proper box outside the living space, everyone agrees. The converter should be checked, everyone agrees. To prevent future issues, try rewiring the batteries.
See here for my reasoning SmartGauge Electronics - Interconnecting multiple batteries to form one larger bank

I know you read it on the internet. However those of us that are electronic, electric professionals don't agree with your wiring issue. It's bogus and silly. Not everything on the internet is accurate. These kinds of things start with somebody that doesn't understand and propagates to all sorts of places where the writers don't know what they're talking about. So far there's at least 3 here that understand that this wiring issue is sillyness. You can do this if you like, you can also make sure you hold your mouth just right while fishing, the effects of both are identical.
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Old 05-13-2013, 03:25 PM   #116
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Francesca, Method #1 is used by Parkliner,, method#2 is the correct way, the article explains what happens if one method is used over the other.
At least this article can explain what causes the imbalance, other readings state that with imbalance batteries you can have the result that occurred. It makes sense to me, and it is an explanation. I can't find a better solution to the problem at hand. As far as finding it on the internet, that is what exactly you are trying to expel to me and others, is it not? I trust sources that are in the business.
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Old 05-13-2013, 03:29 PM   #117
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Originally Posted by cpaharley2008 View Post
Francesca, Method #1 is used by Parkliner,, method#2 is the correct way, the article explains what happens if one method is used over the other.
While you are at last correct Jim that Parkliner does it one way and your article suggests doing it another way I just can not understand your need to be "Right" about this wiring topology which is just not a factor at all and certainly not a factor contributing to any issues in the Parkliner here?

Even if for fun we agree you are right this is the most inconsequential of all factors here and in no way has anything to do with the Smoke.

I am glad you found what you are looking for but as Byron so well put it,this is silly. It has nothing to do at all with the problem at hand.
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Old 05-13-2013, 03:37 PM   #118
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While I have read & discussed the methods of parallel wiring of batteries with others on other forums, my electrical experience cannot accept the fact that it makes any difference unless someone had invented new electrical current laws. Have to agree with Byron until someone can present proof of the difference.

I'm still betting on a problem with the converter overcharging the batteries - remember, both overheated & outgassed.
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Old 05-13-2013, 03:39 PM   #119
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Yeah I agree. Most likely the charger didn't stop pumping juice into the battery and it cooked them. Ive seen it happen with cheap charger's but like everything else in this world, things to fail.

Im sorry that it scared you but I don't think this is a ParkLiner "problem", its a charger problem that can happen to any brand.
Deryk it is a Parkliner problem if they failed to put in place guards to protect the trailer and the people in it in the event of an electrical equipment failure which you are correct can and do happen. I know that at least 3 of the current fiberglass trailer manufactures (who knows perhaps they all do) put safeguards (inline fuses at the battery) on their trailers to make sure that when electrical problem such as a failed charger takes place no harm is done to the trailer or the people in it. It wouldn't surprise me if there wasnt actually some RV Electrical code that requires it. That safeguard doesnt in this situation appear to be in place on the Parkliner.

Bottom line is if you own a Parkline you should probably go check your trailer and make sure its got a fuse or circuit breaker right at the battery. If it doesnt then install one to protect yourself and your trailer.
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Old 05-13-2013, 03:42 PM   #120
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Originally Posted by Jon Vermilye View Post
While I have read & discussed the methods of parallel wiring of batteries with others on other forums, my electrical experience cannot accept the fact that it makes any difference unless someone had invented new electrical current laws. Have to agree with Byron until someone can present proof of the difference.

I'm still betting on a problem with the converter overcharging the batteries - remember, both overheated & outgassed.
The author of the linked article doesn't show his math, but does indicate that he was using a hypothetical 100 amp current flow. At the level of amperage that a camper uses, the resistance difference of the wires between the batteries would be significantly diminished.

I think that you are right about the nature of the problem, root cause is TBD. No way did the wiring between the batteries cause the issue.
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Old 05-13-2013, 03:44 PM   #121
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A fuse probably wouldn't have helped. It would need to be at least the maximum output of the converter to prevent opening during normal charging, and the current during the final stages of charging when the overheating takes place would likely be less than the converter maximum output.

I do feel that the batteries should be sealed from the interior of the trailer & vented to the outside to prevent exactly what happened in this case. Still would have cooked the batteries, but not gassed the owners.
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Old 05-13-2013, 03:45 PM   #122
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Originally Posted by Carol H View Post
Deryk it is a Parkliner problem if they failed to put in place guards to protect the trailer and the people in it in the event of an electrical equipment failure which you are correct can and do happen. I know that at least 3 of the current fiberglass trailer manufactures (who knows perhaps they all do) put safeguards (inline fuses at the battery) on their trailers to make sure that when electrical problem such as a failed charger takes place no harm is done to the trailer or the people in it. It wouldn't surprise me if there wasnt actually some RV Electrical code that requires it. That safeguard doesnt in this situation appear to be in place on the Parkliner.

Bottom line is if you own a Parkline you should probably go check your trailer and make sure its got a fuse or circuit breaker right at the battery. If it doesnt then install one to protect yourself and your trailer.
Carol I don't see how adding an inline fuse off the positive terminal would prevent a battery from cooking. I thought that a fuse would blow in the fuse box if it was drawing more power then its rated for?
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Old 05-13-2013, 03:48 PM   #123
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Anyone know what type of Gas was released or toxicity since children were in there?
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Old 05-13-2013, 03:48 PM   #124
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A fuse probably wouldn't have helped. It would need to be at least the maximum output of the converter to prevent opening during normal charging, and the current during the final stages of charging when the overheating takes place would likely be less than the converter maximum output.
Agree that it wouldn't have prevented this problem, but I still think it is good practice in case of a hard short on the battery cable. I'm not sure that I'd want a trailer battery to charge at 45 amps. If the converter would actually charge it at 45 amps, maybe a circuit breaker rated at the maximum battery charge rate isn't such a bad idea.

Quote:
I do feel that the batteries should be sealed from the interior of the trailer & vented to the outside to prevent exactly what happened in this case. Still would have cooked the batteries, but not gassed the owners.
Agree, a battery box isn't expensive nor complicated to vent. That metal strapping installation by Park Liner is disappointing.
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Old 05-13-2013, 03:56 PM   #125
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Correct that if this problem was caused by overvoltage from the converter/charger, that a fuse likely would not have blown. The fuse is a current limiting device, not voltage limiting.
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Old 05-13-2013, 03:59 PM   #126
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Anyone know what type of Gas was released or toxicity since children were in there?
Mostly hydrogen, which is highly flammable to the point of explosive in confined spaces. One of the worst disasters with hydrogen was the Hindenburg. Watch the news reel here
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