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  1. #1
    Norm37's Avatar
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    Using a Battery Tender on a double Battery Setup?

    Hello everyone, I was on the verge of installing a double battery setup with the Sea-Doo extra battery setup assembly and was wondering if while using a battery trickle charge, would it charge and maintaine both batteries at the same time or would I need 2 separate tenders? Thanks

  2. #2
    How are the batteries set up? Are they cabled together (like a jump start) or are they separated with switches?

  3. #3
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by Norm37 View Post
    ... installing a double battery setup with the Sea-Doo extra battery setup assembly ...
    Do you have a link to the technical details on this Seadoo kit?

  4. #4
    tiderider's Avatar
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    On a boat we used 2 x battery tender chargers. The negatives were daisy linked but the positives were separate feeds from a selector switch. technically you can use 1 battery charger for 2 batteries if they are the same brand, capacity and are in parallel but it can be an issue if 1 battery has more capacity then the other due to wear or manufacturing quality between the 2 batteries. Ideally. if you can remove the positives connection on the batteries and use 2 x chargers would be the best.


  5. #5
    Norm37's Avatar
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    This is how it’s setup. Both seem wired together.

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