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  1. 05-05-2021, 01:25 PM #1
    mzalke
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    Battery for a 1972 911s

    I was using a Interstate 911 single battery and they do not make them anymore. Would anyone have a lead on what type of replacement brand that's available now? Any help would be appreciated. Thanks, Mike
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  2. 05-05-2021, 02:42 PM #2
    edmayo
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    Advance Auto has a lead acid battery with sealed caps so you can run a vent line overboard instead of venting into the battery box. The fit is perfect, no changing of wire ends or bungee tiedowns required. "BEP T 4"
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  3. 05-06-2021, 04:42 AM #3
    NorthernThrux
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    The Sonnenschein A512/40 A has no vent, is an AGM battery and fits like a glove.

    You can move the Sonnenschein label to the back side and put the Varta or Deta sticker of your choice on the front. This one is correct for '72 (https://www.isaydingdong.co.uk/oursh...Volt-90mm.html)

    Ravi

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  4. 05-06-2021, 05:23 AM #4
    edmayo
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    sonnenschein is BEST, I think he was looking for a Interstate alternative.
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  5. 05-06-2021, 07:26 AM #5
    mzalke
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    Thanks for all the help. I will get the Sonnenschein. I was looking for the Interstate alternative.
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  6. 05-06-2021, 10:19 AM #6
    ejboyd5
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    I have been using lead acid batteries for all my life in a variety of vehicles and have never any problem with spillage or vapors. Is my experience really that unusual? Is it necessary to consider a vent tube or battery mat in a Porsche?
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