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Old 03-08-2014, 07:49 PM   #1
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Dead house batteries. Are they trash now

So the RV is in for some due bill work. They first said one week then two weeks. Called yesterday, Friday. Service said most stuff was done and it is in the paint shop getting the paint touched up. And it would be done that night and Monday i could come get it. Well today noticed i left my easy-up in the RV. I call and the person said no prob come get it. We find my RV and it looks like it has not moved in two weeks and the paint is not fixed. I open the door to see if anything was done and the house batteries are beyond dead. Obviously something was left on. So beside being lied to are the house batteries trash now. Will a load test be accurate after they put a full charge on them? Or should i demand new house batteries? I have heard many times that taking a lead acid down to zero will hurt the battery.

Thanks in advance for answers.
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Old 03-08-2014, 08:00 PM   #2
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it would help if you clarified if it's a motorhome or trailer.
the term "house" battery usually refers to a motorhome but some use the term for their trailer batteries.
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Old 03-08-2014, 08:16 PM   #3
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They may not be toast but you've definitely had a hurt put on them... A load test should show you if you can still use them... but I'd try to get something for the damage they've done to their LIFE CYCLES by letting them fully discharge. I'd want to be present to SEE the load test as well.
Alternatively...you could have them deliver them to you "fully charged" but not hooked up. Wait 24 hours and THEN take a voltage or turkey baster reading and see what % charge remains. It should be 12.6V and anything less is loss of capacity.
Good luck!
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Old 03-08-2014, 08:18 PM   #4
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Quote:
Originally Posted by parpar1
So the RV is in for some due bill work. They first said one week then two weeks. Called yesterday, Friday. Service said most stuff was done and it is in the paint shop getting the paint touched up. And it would be done that night and Monday i could come get it. Well today noticed i left my easy-up in the RV. I call and the person said no prob come get it. We find my RV and it looks like it has not moved in two weeks and the paint is not fixed. I open the door to see if anything was done and the house batteries are beyond dead. Obviously something was left on. So beside being lied to are the house batteries trash now. Will a load test be accurate after they put a full charge on them? Or should i demand new house batteries? I have heard many times that taking a lead acid down to zero will hurt the battery.

Thanks in advance for answers.
Guessing with a "trickle" discharge caused by parasitc loads, the damage done is minimal, important to grt the batts recharged ASAP. Afer charge have a cable lifted to stop the discharge until back in your custody.
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Old 03-08-2014, 11:00 PM   #5
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Originally Posted by camaraderie View Post
They may not be toast but you've definitely had a hurt put on them... A load test should show you if you can still use them... but I'd try to get something for the damage they've done to their LIFE CYCLES by letting them fully discharge. I'd want to be present to SEE the load test as well.
Alternatively...you could have them deliver them to you "fully charged" but not hooked up. Wait 24 hours and THEN take a voltage or turkey baster reading and see what % charge remains. It should be 12.6V and anything less is loss of capacity.
Good luck!

Sounds like i better put up a good fight if they say it is not a problem and refuse to replace them.

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Guessing with a "trickle" discharge caused by parasitc loads, the damage done is minimal, important to grt the batts recharged ASAP. Afer charge have a cable lifted to stop the discharge until back in your custody.
I dont think so. I have left it off shore power for a few weeks at a time, with the battery by-pass left on, and still had a little voltage reading on the control panel. And when i say dead i mean dead. I have been doing a little reading and it definitely is not good for batteries. Maybe i can swing a deal and get two 6 volts for the higher milli amps.

Oh it is a 2014 Class C Sunseeker 32foot 3010DS motorhome.
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Old 03-09-2014, 07:45 AM   #6
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Another possibility is to buy a good battery charger that includes a "battery Recovery" mode. Basically a super "desulphator" it will try to blast the corroded plates clean of the hardened lead sulphate and restore your plates and electrolyte back to near normal levels.

It works most of the time and is a worthwhile investment in any case.

12V Battery Recovery Charger & Desulfator 16 Amp, Xtreme XCR-20

While you may not need the priciest of units (like the cheaper "shop" one above - if price is not an object), there are others that may just do the job for you like XC100-P Xtreme Charge 12V Battery Maintenance Charger Desulfator
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Old 03-10-2014, 09:11 PM   #7
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This might be a stretch Herk, but if I had one of the XC100-P chargers hooked up to my posts on the battery while boondocking, do you think it will give me a battery charge % on the led's without being plugged in to 110.? How long will this charger take to fully charge a 50% depleted Trojan SCS200 battery?

Sorry for hi-jacking the thread.
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Old 03-10-2014, 09:16 PM   #8
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Originally Posted by Herk7769 View Post
Another possibility is to buy a good battery charger that includes a "battery Recovery" mode. Basically a super "desulphator" it will try to blast the corroded plates clean of the hardened lead sulphate and restore your plates and electrolyte back to near normal levels.

It works most of the time and is a worthwhile investment in any case.

12V Battery Recovery Charger & Desulfator 16 Amp, Xtreme XCR-20

While you may not need the priciest of units (like the cheaper "shop" one above - if price is not an object), there are others that may just do the job for you like XC100-P Xtreme Charge 12V Battery Maintenance Charger Desulfator
Gulp I just saw the price on that unit. Has to be a home made DYI kit somewhere.
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Old 03-10-2014, 09:18 PM   #9
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Desulfator for 12V Car Batteries, in an Altoids Tin

found this.
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Old 03-10-2014, 09:55 PM   #10
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Gulp I just saw the price on that unit. Has to be a home made DYI kit somewhere.
That was the cheap one.
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