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  1. #1
    Zack's Avatar
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    1996 Seadoo Speedster Electrical Question

    Hey guys, had a quick question for everyone if they could help out.
    For Christmas, my family had bought my dad a speedster that needed minor fixes but ran. The question of the day is that the whole electrical system was hooked up by a car battery rather than the factory 2 marine batteries, would the car battery cause problems to the whole electrical system? (Such as the charging system etc.)
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  2. #2
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    no, that's a common upgrade for speedsters. you do want to add a cutoff switch to the setup AND something to hold the battery in place besides good luck and a couple of bungees such hackage can lead to fire if the boat flips.

  3. #3
    wouldnt the 2 separate electrical charging systems be fighting each other? i can see a battery selector for one, or 2 batterys.

  4. #4
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    I hear this kind of thing all the time. While I've pretty much stopped working on Seadoo boats, when I did almost every one coming thru wanted to do something about the horrid access and expensive batteries system in this boat. A good stereo can flatten a ski battery in no time. Full size batteries have better recovery rates. Easier to work with and more reliable to have a marine grade group 65 battery in there

    Of course you can design your own dual + battery system, separate the charging system outputs and do all kinds of cool stuff. I did an entire trolling motor setup for one guy with charging for the troller battery on demand. Dual large batteries is pushing the edge..it gets tight and that defeats the primary purpose of going to a single.

    but to answer your question:

    no, these are dc charging systems..the don't "fight" each other as an out of phase set of a/c generators would.

    get the battery secured, install a master switch and enjoy the water!

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