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Thread: One Sonnenschein A512/40 Enough?

  1. #1
    Senior Member Veronica87911's Avatar
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    Sep 2012
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    Philadelphia, PA
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    One Sonnenschein A512/40 Enough?

    I've been thinking about replacing my almost new Odyssey battery with a single Sonnenschein A512/40A battery (DF75). It has 400CCA. Do you guys feel it's enough to start Daisy without any problems? I live in Philly, and wintertime, I have a BatteryMinder smart charger, which I would replace with on that can handle gel batteries (maybe mine does...gotta check).
    Daisy is a 1972 T with a 1977 2.7 engine; since I've had her, she's only had a single battery on the driver side.
    Let me know your thoughts and real-world experience...thanks.
    Serge


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    Serge

    City of Ben Franklin and Cheesesteaks
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    Early S Registry #2457
    Daisy: 1972 T with 2.7 engine and Webers
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  2. #2
    Senior Member
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    CT
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    I have been running a single Sonnenschein in my RSR hot rod for several years now. No issues.
    Tom Butler
    1973 RSR Clone
    1970 911E
    914-6 GT Clone in Progress

  3. #3
    Senior Member M_deJong's Avatar
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    I ran on one for a while after it’s twin died. No problem.
    Mike de Jong | '71 911T/E 2.4 Tangerine | '74 911S 3.2 Ice Green

  4. #4
    A single battery is enough to start the car, but not enough to keep it from spinning if you lift off in a corner at the limit.
    1966 911 #304065 Irischgruen

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