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Old 05-26-2022, 06:42 PM   #1
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Battery leakage

I was very discouraged to open my battery compartment to check the water levels and find excessive leaking on all the batteries I purchased just a year ago. Too much of an ordeal and too little time to deal with before heading on trip tomorrow. I have no idea if it is poor battery quality (batteries plus 6v). Never had issue with original batteries other than just had a bit of a shortened life due to inactivity and only 3-6 week charging gaps when not vacationing (I store with batteries disconnected)

I never bothered setting up auto gen to recharge but maybe wish I had. Maybe would have prevented or wonder if some issue with magnum energy voltage management. Could use suggestions
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Old 05-26-2022, 06:50 PM   #2
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From where are they leaking, fill caps, crack in case, around connection terminals?
If you are out of time, consider covering the batteries with plastic, then spraying the compartment floor with a baking soda solution in a garden sprayer to stop/slow corrosion.


Are you absolutely sure they are connected properly?
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Old 05-26-2022, 07:29 PM   #3
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Generally if batteries are venting electrolyte, they're being overcharged. I get that the last set may not have done this but something changed, either the charge settings, a charger problem, or the batteries are different. Check the charge profile critically and make sure that the charge cycle reverts to float after the prescribed absorb phase.

Your batteries have what are called "speed caps" which makes for quick and easy electrolyte checking but in my experience they're not the most liquid tight. The first thing I buy with a set of batteries is a set of water miser caps. They fit better and vent gases without allowing spray. With these caps the only battery cleaning I do is blowing the dust off once a year.

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Old 05-26-2022, 07:49 PM   #4
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I agree with Mark, probably off gassing. You should consider AGM's next time. In my earlier years I always bought wet cells and never realized how much time and work I would save with AGM's. Now its AGMs or at least sealed maintenance free batteries in everything I drive.
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Old 05-26-2022, 08:47 PM   #5
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Yes they’re connected properly as I made sure I did it exactly same way as the ones I removed.
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Old 05-26-2022, 09:00 PM   #6
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Thanks good to know. I didn’t make any settings changes and I have observed the charge rate and when it goes to float. Everything seems the same. I had brought it to the house yesterday, voltage was 11.4, charged to float, unplugged shore and left inverter on to keep fridge running. Came out in the morning and read 12.2 so still in decent shape. I’ll reanalyze the setup again to be sure.
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Old 05-27-2022, 03:15 AM   #7
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There in lies the problem. It really helps to know the whole story. The battery was discharged down to only a 15% state of charge. That is not good for a flooded lead-acid battery.
Then if allowed to sit that way the plates sulfate, this sulfate inhibits recharging which causes_ well, rather than try to explain, perhaps reading this is best.
https://www.crownbattery.com/news/su...ry-maintenance
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Old 05-27-2022, 06:40 AM   #8
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Separate problem, discharged batteries don't vent.

Mark B.
Albuquerque, NM
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Old 05-27-2022, 07:49 AM   #9
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I agree with Mark and Chuck. The most likely explanation is water has been consumed while charging. Charging lead acid batteries consumes water. Charging at higher voltage consumes more water.

Actual leaking would cause sever corrosion below the batteries.

I had difficulty reading the labels on the new batteries. Are they engine starting batteries or are they deep cycle RV batteries? Each type has its own purpose.
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