Check for a dead cell or poor connection. Other than that, change the position of that battery in the line up and see it is still the same battery that boils water. If not, there is a setup problem, it it is the same batt then get a replacement.
__________________ Brenda and John
'14 Ram 3500 MCSB 6.7L HO PullRite 16K S/G, Grey Columbus 320RS Camped '14 - 146 days/'15 - 196 days
USN-EOD(Ret), Master Chief, 30 yrs,
Master Blaster of the Navy
How do you have the charger set up on them? You should have it set up so the positive is off the first battery and the beget ice should be off the last battery. This charges and draws voltage off all the batteries at the same amount.
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Stan, Wanda, Sheray, Alex, Nicky, and Macky(the Chorky).
2013 Prime Time Avenger 33BHS
have the battery tested, first you can do a specific gravity test, if ok - which I doubt, then load test. I'll bet you have a bad cell. It won't matter what position it's in, it'll still boil off.
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2000 Cherokee 29BH with 6V batteries, LED lights & 400 watts of solar power, flipped axles and raised. 2007 Tundra 5.7L DC-LB with lots of mods. C-co, 8/158th AVN Maint.
I have the usual arrangement of (4) 6 Volt house batteries, first two of them are connected in series to give 12 volts, the other two the same.
Then each pair of 12 volt bats are connected in parallel to give double the amp hours.
The problem is that one (and ONLY one) boils off liquid at a pretty good rate, while the other 3 lose almost no electrolyte at all.
I assume this indicates something wrong with the one battery like an internal short or something of that sort.
Am I wrong? Anything else I should look at??
Boowho??
Sounds like the one battery is cooked, literally. You could remove it and have a battery distributor do a load test on it as suggested. My guess is you need to have the one renewed at least, many others will say they should be changed together as an equal set. Worst can happed the battery will fail and you'll be down to one bank. Maybe start with the test? A lot will depend on how old and heavily used.
How do you have the charger set up on them? You should have it set up so the positive is off the first battery and the beget ice should be off the last battery. This charges and draws voltage off all the batteries at the same amount.
I will try swaping the positions as you suggest BigTJohn.....
Meanwhile here's a diagram of how it's wired. The Green lines are the leads going off into the coach. Why there are two positives and two negatives I have no idea.
NOTE: ALL wires (except the ones going to the coach) should be EXACTLY the same length and Gauge.
Corrected your diagram for correct wiring sequence:
Also Ditto on the shorted cell...
Wait a sec, Herk..... The extra circuit into the house is how it came from the factory. I mean FR made two circuits out of it going into the house for a reason, right? I can't very well leave one off and dangling loose.
Wait a sec, Herk..... The extra circuit into the house is how it came from the factory. I mean FR made two circuits out of it going into the house for a reason, right? I can't very well leave one off and dangling loose.
Boowho??
Before I answer that I need a photo if at all possible. If there are two different circuits, there should be no "ties" between the "battery sets." If there is ONE circuit, then there should be only one ground and one hot from the camper's converter.
Do you have an INVERTER? Perhaps one set of wires goes to an inverter and not the converter/charger.
Having two separate "plus" lines and two separate "ground" lines and then tying them together at different battery posts makes no sense to me.
Wait! I just looked up your camper. You have a Berkshire motorhome.
Maybe one set goes to the motor's alternator or generator so both are not charging at the same time...
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
Before I answer that I need a photo if at all possible. If there are two different circuits, there should be no "ties" between the "battery sets." If there is ONE circuit, then there should be only one ground and one hot from the camper's converter.
Do you have an INVERTER? Perhaps one set of wires goes to an inverter and not the converter/charger.
Having two separate "plus" lines and two separate "ground" lines and then tying them together at different battery posts makes no sense to me.
Wait! I just looked up your camper. You have a Berkshire motorhome.
Maybe one set goes to the motor's alternator or generator so both are not charging at the same time...
I DO have an inverter and I'll bet that's what the second circuit is for.
OR it's as you say one for the alternator, one for charging from shore power.
I DO have an inverter and I'll bet that's what the second circuit is for.
OR it's as you say one for the alternator, one for charging from shore power.
Thanks
Boowho??
If it is indeed the Inverter, it would make more sense to have both grounds on one battery and both positive leads on the opposite farthest battery as indicated in my modified picture.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
If it is indeed the Inverter, it would make more sense to have both grounds on one battery and both positive leads on the opposite farthest battery as indicated in my modified picture.
Electrically, what is the difference between these two drawings? My knowledge of electricity tells me there is no difference. But obviously I can always learn something new.
Along that same thought, why is it that the jumpers all be the same length? If they are copper, resistance would be negligible I should think. I can understand being the same gauge, but not the requirement they be exactly the same lenghth.
The electrical resistance between the Positive and Negative end points is not "negligible" when you are charging or discharging the batteries when you consider that one battery (set in your case) will work harder than the other at all times. That will lead to early failure of one battery set (could be why you are having problems).
This is how 2 12 volt batteries should be connected to balance the current into and out of a bank.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
Just wondering, can those output leads be doubled to allow for the high current? IE: if the AWG is small but doubled to carry all the ampacity the batteries can deliver vs single heavy cables each polarity?
Brenda and John
Linear Mode
