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  1. #1
    Click avatar for tech links/info, donation request K447's Avatar
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    Arrow Deka ETX16 battery post polarity can be either way; ETX16L has positive on right

    I must admit I have not been watching this closely, but it seems that the Deka ETX16 factory sealed AGM battery comes in TWO versions. One has the positive battery post on the left, the other has the positive post on the right.

    The polarity orientation is indicated by the L suffix, such as ETX16L or ETX16LM.

    Update: Apparently the ETX16L has positive post on the Right, and ETX16 (without the L suffix) has positive post on the Left.

    Or said differently, ETX16L has negative post on the Left, and ETX16 (without the L suffix) has negative post on the Right.

    Yesterday I was replacing a still-good CarQuest Platinum ETX16L (about one year old) with a brand new BatteryMart.com supplied (via Amazon.com) Big Crank ETX16 battery. Both appear to be made by Deka (East-Penn), with the distinctive Deka style posts and red plastic cap. It would have been easy to accidentally install the battery cables on the wrong posts, as the new battery dropped in with the negative post nicely lined up with the RED battery cable!

    You might think that the red plastic cap would be a clear indication, but normally this cap is removed just before the battery is installed. I added red electrical tape to the positive corner on each battery to make it harder to get it wrong next time.

    Which polarity arrangement works better in your model Polaris watercraft? Positive on the left or positive on the right?

    On some models the battery post polarity makes little difference.

    On the 2004 Virage i the left hand terminal is buried under the EMM bracket, so the right hand positive (no L suffix) works better, with the positive terminal out where I can see it.
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    Last edited by K447; 04-25-2017 at 09:10 AM.


  2. #2
    ripcuda's Avatar
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    Quote Originally Posted by K447 View Post
    Which polarity arrangement works better in your model Polaris watercraft? Positive on the left or positive on the right?
    On the MSX 110/150... the left negative version works well for me. I have the ETX16L version of your battery and it "lines up" well.

    But I think either could work fine. Where the battery sits in MSX 110/150 allows easy access to either terminal in the foam box. So you could easily rotate the battery 180 and still get it hooked up fine... keeping the negative side forward.

    Cheers!

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