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Old 03-31-2016, 04:31 PM   #1
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Battery boiling over

I have a question and really don't know how to ask the question but i will try.

I have a 29ft Starcraft with only one 12v marine battery

This morning i was cleaning up around the trailer and noticed a white chalky substance on my driveway right under the battery case. I have my battery hooked to my house current. I unhooked the battery and took it out of case and in the bottom of case was a small amount of liquid. The battery and case looked fine and I have a full charge on the battery. I would assume that the battery is boiling over and dripping out the bottom holes of the battery case. Is my converter overcharging the batteries and causing this or is there something else going on? Thanks in advance for any advice on this issue. Also should I be taking my battery out and putting it on a trickle down or is okay to leave it plugged into house current.
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Old 03-31-2016, 05:15 PM   #2
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cmcguire48-

What is the make, model and year of the battery?

What is the make, model and year of the converter?

What are the fluid levels in each cell of the battery?

Do you have a hydrometer with which to test the battery?
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Old 03-31-2016, 05:57 PM   #3
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Pull the battery and have it tested. After installing a battery, use a volt meter to check the voltage with the trailer plugged in.

A battery needs to be kept fully charged, a disconnect switch and Battery Tender is how I do it.
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Old 03-31-2016, 06:31 PM   #4
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battery

Battery is good I just need to know where the liquid is coming from and why
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Old 03-31-2016, 06:36 PM   #5
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It's battery acid from either overcharging, fluid overfilled, or a very remote chance of a battery case crack/leak.
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Old 03-31-2016, 06:52 PM   #6
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For years now, RV dealers have been putting battery boxes on trailers that are meant for boats. For that reason, most if not all box manufacturers no longer make the correct boxes that don't have a rain collecting top vent. I silicone seal those vents and drill drain holes in the bottom.
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Old 03-31-2016, 07:01 PM   #7
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battery is clean and only 3 months old and water levels have not been touched. I think you are right about overcharging and if so what can i do to remedy that. I have it plugged into the house current, should I take it off and put it on a trickle down?
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Old 03-31-2016, 08:16 PM   #8
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I'm in over my head with that question and might only lead you a stray with an attempt at an answer.
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Old 04-03-2016, 06:48 PM   #9
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What is the charging voltage, you have checked it right? It's hard to fix something when you are "guessing" what is wrong.



The information is out there, all you have to do is let it in.
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Old 04-03-2016, 08:52 PM   #10
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Really there's only two answers. Over filled or over charging.
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Old 04-04-2016, 08:37 AM   #11
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Battery boiling over

Regarding battery testing-- I have found this tool SOLAR BA7 100-1200 CCA Electronic Battery and System Tester https://www.amazon.com/dp/B0015PI7A4..._jWMaxb7GT6GHB

To be an excellent indicator of battery health. You enter the battery type and the CCA capacity of the battery. It returns
-red yellow green status
-batt voltage
-current battery capacity in CCA

It is easier than the hygrometer and provides a better "health status" expressed in CCA.

Granted, the price is on the opposite end of the scale of the hygrometer but I have 9 automotive, Rv or marine batteries and need a quick way to access the health of them when troubleshooting problems.
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Old 04-05-2016, 05:59 PM   #12
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I have a different theory because it happened to me. When I opened the top of the case on my then new tt I found the battery compartment partially filled with water. I tested the water and battery and realized there was rain water getting into the battery compartment. Solution was to pull the battery and drill a few holes in the bottom of each case. Problem solved for me. 2 years and no accumulation. I'm just guessing about your situation as batteries don't usually boil over. Good luck.
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Old 04-05-2016, 07:29 PM   #13
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Keep it full of fluid (distilled water) and don't worry.
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