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Has anyone considered a lightweight 12v battery?
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Thread: Has anyone considered a lightweight 12v battery?

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    Member rjlong's Avatar
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    Has anyone considered a lightweight 12v battery?

    I was looking at weight reduction options, in addition to the rear seat delete, rear wiper delete, noise maker delete, motor cover delete, hood heat shield delete... and there it was. The 40 pound wonder of a lead acid battery. Without the heavy amp load of a starter, why do we need such a big, heavy low voltage battery? Seems like one of these 3.2 pound lithium ion motorcycle batteries would be perfect. Has anyone tried it? They even have terminal adapters for standard size terminals.

    https://shop.antigravitybatteries.co...-case/ag-1601/

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    DaveN007 (01-22-2017)

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    Quote Originally Posted by rjlong View Post
    I was looking at weight reduction options, in addition to the rear seat delete, rear wiper delete, noise maker delete, motor cover delete, hood heat shield delete... and there it was. The 40 pound wonder of a lead acid battery. Without the heavy amp load of a starter, why do we need such a big, heavy low voltage battery? Seems like one of these 3.2 pound lithium ion motorcycle batteries would be perfect. Has anyone tried it? They even have terminal adapters for standard size terminals.

    https://shop.antigravitybatteries.co...-case/ag-1601/
    I will be curious to see the results. I assume you are going for better range/performance. I have gone the opposite route. Tires that provide better grip. I have not been able to confirm any difference in range, and I have a "control" for weather in my garage. My daughter drives an identical car. We see same range estimates. She has OEM tires and wheels.
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    Quote Originally Posted by DaveN007 View Post
    I will be curious to see the results. I assume you are going for better range/performance. I have gone the opposite route. Tires that provide better grip. I have not been able to confirm any difference in range, and I have a "control" for weather in my garage. My daughter drives an identical car. We see same range estimates. She has OEM tires and wheels.
    I'm looking for better performance, including range. My commute isn't far, and I rarely use half a charge in a day. Better power to weight ratio is never bad. And, taking some weight out of the front will help the balance a bit.

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    You're correct. Lighter is better and there is no large peak load on the battery. However, I think that perceptible benefits will be small.

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    Quote Originally Posted by rjlong View Post
    And, taking some weight out of the front will help the balance a bit.
    Which is why you are removing the rear seats. Gotcha.

    (Just teasing. LOL. I applaud the effort.)
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    I wouldn't worry about weight too much, but that is a interesting question about the battery. My old TDI needs about 550CCA to get started, my wife's hybrid (and the 500e) doesn't need much current but needs voltage to keep the computers functioning. I remember when the cells went bad on the hybrid, the power windows started slowing down when the battery read 12V; the car wouldn't start when the battery read 9V. I measured out the 500e and I currently have 14.3V.

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    Quote Originally Posted by maximizese View Post
    I wouldn't worry about weight too much, but that is a interesting question about the battery. My old TDI needs about 550CCA to get started, my wife's hybrid (and the 500e) doesn't need much current but needs voltage to keep the computers functioning. I remember when the cells went bad on the hybrid, the power windows started slowing down when the battery read 12V; the car wouldn't start when the battery read 9V. I measured out the 500e and I currently have 14.3V.
    Read Eric Cha's post in this thread: https://plus.google.com/108783224192...ts/7Jui65CkuMr
    He was able to jump start his 500e by stringing together some AA batteries!

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    Quote Originally Posted by DaveN007 View Post
    Which is why you are removing the rear seats. Gotcha.

    (Just teasing. LOL. I applaud the effort.)
    Rear seats are already out. Most of the easy weight loss is behind the driver, so finding 30-something pounds up front is a win in my book, and a move in the right direction!

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    Quote Originally Posted by rkw View Post
    Read Eric Cha's post in this thread: https://plus.google.com/108783224192...ts/7Jui65CkuMr
    He was able to jump start his 500e by stringing together some AA batteries!
    Ha. Doesn't surprise me at all. One AA battery is good for 1.2-1.5Vs and that's probably enough to get 12Vs for the computer. Thanks for sharing that, I'm sure it'll by handy for us all. I'd hate to be out somewhere and have my battery stuck in the "ignition" column.

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    Quote Originally Posted by rkw View Post
    Read Eric Cha's post in this thread: https://plus.google.com/108783224192...ts/7Jui65CkuMr
    He was able to jump start his 500e by stringing together some AA batteries!
    Isn't his last name actually MacGyver?
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