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Old 08-30-2014, 03:32 PM   #1
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Battery top off

So, I checked the fluid level on the batteries, between the two it took almost a half gallon to top them off to within 3/4" from the top.

Is that an abnormal amount? Should I be concerned?
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Old 08-30-2014, 03:44 PM   #2
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Depends on what battery you have, but does seem like quite a bit. It's typical to loose water during charging. How often do you check the water levels after a charge? Do you leave them hooked up and floating for extended periods? Any signs of liquid anywhere around or on your battery? I would imagine you're checked for cracks.
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Old 08-30-2014, 04:00 PM   #3
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The bad news is if any portion of the plates were exposed, they will no longer accept a charge. You might want to do a hydrometer test at full charge, to determine your bats health. Make sure you follow the proper procedure when drawing the acid into the hyrometer, to get an accurate reading.
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Old 08-30-2014, 04:21 PM   #4
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So just got the rv two weeks ago and figured I'd check them out.

Battery compartment was dry, no noticeable cracks in the cases.

I could see the top plates on one cell exposed.

I normally plug in the shore power when it's parked. Figured that would keep the batteries charged off the inverter?

Tried to install a cheap volt gauge, but it's reading .5 volt less then the multimeter. So all I have to go with while camping is the F, 2/3, 1/3, E on the control panel.
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Old 08-30-2014, 04:23 PM   #5
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Another thought, why is it bad if the plate was exposed? Don't they ship batteries dry?
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Old 08-30-2014, 04:37 PM   #6
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Quote:
Originally Posted by poorbuthappy View Post
Another thought, why is it bad if the plate was exposed? Don't they ship batteries dry?
They do ship batteries dry when new, difference is there is no voltage in the battery yet.
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Old 08-30-2014, 04:38 PM   #7
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Makes sense.
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Old 08-30-2014, 04:40 PM   #8
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That's a lot of water. I would be concerned. My 2 batteries take about 1/2 liter total when I fill them on a monthly basis.

Watch them closely.

Personally, I don't trust the built in chargers for storage. I think they boil batteries dry if there is no load. I am okay hooked up for 3 months in FL but after 2 weeks in storage they are dry. That's why I store with a battery tender.

Bill
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Old 08-30-2014, 05:08 PM   #9
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Agreed. That's why I asked about your charging habits. 1/2 gallon for 2 batteries is relative. Are you talking 2 6v's? 2 12v's? 2 tractor batteries? If you saw plates, then it will kind of depend on how much was exposed, for how long, or if they where exposed during an active charge cycle. Best case, only a tiny portion is now dead. The battery will still charge to regular voltages, but the capacity will be diminished. They can't fully be trusted again though. They could work just fine for a week or a month, but short out and die completely at any moment. Worst case... their just paperweights now. I doubt a dealer would do anything to help even after just 2 weeks. They will just say that you cooked your batteries on a bad charger... your fault.

Good Luck.
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Old 08-30-2014, 07:31 PM   #10
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Bah, it happens. Knew I should have checked them during the PDI. Probably just junk anyways. Run them till they die. They are the ones that came with the sunseeker, assuming 12v "deep cycle"....
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