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Ventless/ sealed auto battery #5416105 04/29/20 05:07 AM
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dlundblad Offline OP
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Is there such a thing anymore? Preferably in the size 151R.

The DieHard Platinum on my Jeep is sealed, but last I knew that battery was discontinued.


03 Jeep WJ 4.0 208k
02 Volvo S60 2.4T 199k
97 Chevy Blazer 4.3 175k
04 Audi A4 3.0 210k

Re: Ventless/ sealed auto battery [Re: dlundblad] #5416121 04/29/20 06:21 AM
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Snagglefoot Offline
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Check out AC Delco. They are SMF. (sealed maintenance free), however I believe they may be vented. My current Professional Gold has 7 years on it.


If you want the job done right......do it yourself.
Re: Ventless/ sealed auto battery [Re: dlundblad] #5416160 04/29/20 07:38 AM
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Chris142 Offline
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Don't all lead acid batteries have to be vented in one way or another?


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
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Re: Ventless/ sealed auto battery [Re: dlundblad] #5416164 04/29/20 07:43 AM
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Wolf359 Offline
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Try an AGM battery, they're still vented but not as much. I have a 12 year old AGM battery in my car and the terminal posts are pristine because it doesn't really vent and there's a vent tube for it anyway.

Re: Ventless/ sealed auto battery [Re: Wolf359] #5416167 04/29/20 07:47 AM
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wwillson Offline
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Originally Posted by Wolf359
Try an AGM battery, they're still vented but not as much. I have a 12 year old AGM battery in my car and the terminal posts are pristine because it doesn't really vent and there's a vent tube for it anyway.

Are AGM batteries expected to last that long? If they are, it would sure beat buying lead acid batteries.

Re: Ventless/ sealed auto battery [Re: wwillson] #5416182 04/29/20 08:08 AM
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Snagglefoot Offline
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Originally Posted by wwillson
Originally Posted by Wolf359
Try an AGM battery, they're still vented but not as much. I have a 12 year old AGM battery in my car and the terminal posts are pristine because it doesn't really vent and there's a vent tube for it anyway.

Are AGM batteries expected to last that long? If they are, it would sure beat buying lead acid batteries.


Accidentally double posted so I changed this. The AGM’s are gaining traction. We put one in my son’s Silverado. Three years so far without problems but too early to tell.

Last edited by Snagglefoot; 04/29/20 08:24 AM.

If you want the job done right......do it yourself.
Re: Ventless/ sealed auto battery [Re: wwillson] #5416183 04/29/20 08:08 AM
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Snagglefoot Offline
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Originally Posted by wwillson
Originally Posted by Wolf359
Try an AGM battery, they're still vented but not as much. I have a 12 year old AGM battery in my car and the terminal posts are pristine because it doesn't really vent and there's a vent tube for it anyway.

Are AGM batteries expected to last that long? If they are, it would sure beat buying lead acid batteries.


Just a terminology note. AGM ( absorbed glass mat) are still considered lead acid but have a glass mat between the plates that wick the acid up instead of the plates being immersed in the liquid acid. Not sure about the longevity. The other type of lead acid battery would be considered conventional or flooded.
smile

Last edited by Snagglefoot; 04/29/20 08:10 AM.

If you want the job done right......do it yourself.
Re: Ventless/ sealed auto battery [Re: dlundblad] #5416267 04/29/20 09:32 AM
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dlundblad Offline OP
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My biggest concern is battery ooz-age leaking out like what is seen on the octagon capped JC batteries at Walmart.


03 Jeep WJ 4.0 208k
02 Volvo S60 2.4T 199k
97 Chevy Blazer 4.3 175k
04 Audi A4 3.0 210k

Re: Ventless/ sealed auto battery [Re: dlundblad] #5416286 04/29/20 10:05 AM
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DallasTexas Offline
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All the Benz's I have owned have/had AGM batteries and the normally last 10+ years.

Having said that, they put their Batteries in Trunk or under the seat and not subjected to temperature extremes.


06 E320 CDI 121k miles
14 Sienna 42k miles
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Re: Ventless/ sealed auto battery [Re: dlundblad] #5416301 04/29/20 10:18 AM
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DBMaster Offline
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The Duracell and EverStart branded batteries made by East Penn are sealed - as in, no removable cell caps - but are vented. As was previously mentioned AGM batteries are vented, too. I'm pretty sure all lead-acid batteries have to be vented in some way.

Re: Ventless/ sealed auto battery [Re: DallasTexas] #5416337 04/29/20 11:07 AM
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bbhero Offline
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Originally Posted by DallasTexas
All the Benz's I have owned have/had AGM batteries and the normally last 10+ years.

Having said that, they put their Batteries in Trunk or under the seat and not subjected to temperature extremes.



Great point ^^^^

In the trunk away from heat in the motor compartment is extremely helpful to battery longevity...


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Re: Ventless/ sealed auto battery [Re: dlundblad] #5416340 04/29/20 11:14 AM
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doitmyself Offline
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Originally Posted by dlundblad
My biggest concern is battery ooz-age leaking out like what is seen on the octagon capped JC batteries at Walmart.


Often times you get terminal corrosion because there is imperceptible seal leakage where the post goes into the case. People here at BITOG claim that East Penn/Deka batteries don't have this problem as much.

Re: Ventless/ sealed auto battery [Re: bbhero] #5416431 04/29/20 12:58 PM
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bunnspecial Offline
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Originally Posted by bbhero
Originally Posted by DallasTexas
All the Benz's I have owned have/had AGM batteries and the normally last 10+ years.

Having said that, they put their Batteries in Trunk or under the seat and not subjected to temperature extremes.



Great point ^^^^

In the trunk away from heat in the motor compartment is extremely helpful to battery longevity...


Back when I had my Lincoln LS, I replaced the factory battery at almost exactly 7 years out of necessity(1/04 build date, replaced 1/11). It rode in the spare tire well, and was vented by way of a hose running out of the car. The battery I pulled out was pristine enough that it could have passed as new, and I'd not really even touched it in the time I owned the car. I put another Motorcraft in it, and it looked every bit as good when I sold the car.

I have no idea who makes the batteries for Motorcraft, but apparently those at least were both high quality batteries, and the mounting/vent arrangement kept them exceptionally clean.


2010 Lincoln MKZ-Mobil 1 5W-30
1970 MG MGB Roadster-Valvoline VR-1 20W-50
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Re: Ventless/ sealed auto battery [Re: wwillson] #5416432 04/29/20 12:58 PM
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PowerSurge Offline
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Originally Posted by wwillson
Originally Posted by Wolf359
Try an AGM battery, they're still vented but not as much. I have a 12 year old AGM battery in my car and the terminal posts are pristine because it doesn't really vent and there's a vent tube for it anyway.

Are AGM batteries expected to last that long? If they are, it would sure beat buying lead acid batteries.


It depends on what part of the country and whether the battery is in the engine compartment or somewhere else. AGM’s sometimes don’t last as long as lead-acid in places like the south and southwest and/or in an engine compartment.


1993 Porsche 964, 2001 Ford SVT F-150 Lightning, 2004 Chevrolet Corvette, 2018 Toyota Tundra and a few others
Re: Ventless/ sealed auto battery [Re: dlundblad] #5416509 04/29/20 02:18 PM
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JHZR2 Offline
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AGM batteries vent at ~1% of other non-sealed batteries. The AGM batteries have a glass mat to wick electrolyte. They are also called Valve-Regulated Lead Acid (VRLA), because they are "sealed" with a valve that opens if and only if the internal pressure (from overvoltages due to high rate/high voltage charging, electrolyzing the water in there) goes too high. Otherwise it stays shut to allow the H2/O2 to recombine.

OP, Id recommend considering an AGM battery if you are set on having it be "sealed". Not entirely sure why it matters in many/most applications, but that's your call.

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