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Unread 07-14-2019, 04:28 PM   #1
Gone Wild
 
Join Date: Jul 2016
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Default Batteries Gassing/leaking during charge?

I have 4x12V trojans in my DS...most of the time after I fill up the water to just above the separator bar in each cell - when the battery is done charging there is ether mist/damp on the top of the battery and in some cases pooling.

Now I've never watered unless they were fully charged so I don't believe it's overfilling due to that, and I don't overfill in general as its to the top of the separator bar.

I'm wondering if its either:

a) I live in an extremely hot and humid climate (80% humidity, dew point at 75-80 degrees F). I wonder if this is just gas condensing as they charge?

b) My battery caps are the long plastic pop off/on things - not individual cell screw plugs - maybe they just are old and worn out? Batteries are 3/4 years old I think.

Appreciate any thoughts on this.

Using the stock charger, OBC is NOT bypassed.
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Unread 07-14-2019, 05:22 PM   #2
dliw enoG
 
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Default Re: Batteries Gassing/leaking during charge?

You may be adding too much water. Trojan recommends the water level be only about 1/4" above the tops of the plates. If the water is up to the bottom of the fill hole you will get moisture venting while charging no matter which batteries you have.
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Unread 07-14-2019, 05:25 PM   #3
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Default Re: Batteries Gassing/leaking during charge?

Also something I have learned is if you lift the seat so air can flow you get less moisture on your batteries.
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Unread 07-14-2019, 06:42 PM   #4
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Default Re: Batteries Gassing/leaking during charge?

Quote:
Originally Posted by Fairtax4me View Post
You may be adding too much water. Trojan recommends the water level be only about 1/4" above the tops of the plates. If the water is up to the bottom of the fill hole you will get moisture venting while charging no matter which batteries you have.
when I fill the water is about 1/4" below the bottom of the fill hole. but still over the plates...up to the separator bar.
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Unread 07-14-2019, 06:43 PM   #5
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Default Re: Batteries Gassing/leaking during charge?

Quote:
Originally Posted by mrgolf View Post
Also something I have learned is if you lift the seat so air can flow you get less moisture on your batteries.
I could try that next time...
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Unread 07-14-2019, 06:46 PM   #6
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Default Re: Batteries Gassing/leaking during charge?

I have attached the most recent Trojan watering recommendations for your reference.

It is best to keep the electrolyte level just below the bottom of the sight well.

Your battery plates should ALWAYS be covered.

It is not unusual for some battery caps to puddle acid during charging ... here is another possible solution: Love my new battery caps

Trojan Electrolyte Level.JPG
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