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  1. #1
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    Service Life of a DEKA AGM battery?

    Just replaced one for a regular customer. Ski is used a few times a year and sits on a tender most of the rest of the time

    The ski is sitting in an unheated storage and is often subjected to freezing and 100+ temps during the year

    This one a 30ah in a RXT lasted 6 seasons before giving up the ghost this week

    In the end equation, a far better value then a lead acid battery


  2. #2
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by nmpeter View Post
    ... Ski is used a few times a year and sits on a tender most of the rest of the time

    The ski is sitting in an unheated storage and is often subjected to freezing and 100+ temps during the year

    ... 30ah in a RXT lasted 6 seasons ...
    Do you know whether that particular battery tender has ambient temperature compensation?

  3. #3
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    it was a Deltran brand battery tender .jr, not sure if it has temp compensation, but I've sold dozens of them over the years

    I'm sure had he removed the battery in the off season and kept it indoor and ran the tender on a timer he would have gotten another year or two out of it.

    He opted to leave it in after the first season, he was a bit of a butterfinger and dropped the battery bracket bolts and battery bolts into the hull

    Surprising as him and a buddy managed to rebuild his blower, and the ski is still running....(I guess his pal did the work and he brought the beer)

  4. #4
    Myself's Avatar
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    I get around 5 years from the off brand AGM batteries that I use.

  5. #5
    steve45's Avatar
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    The original Yuasa battery my dealer installed in my Ultra 150 lasted for 9 years. No maintainer, just a Schumacher trickle charger plugged into a timer that let it run 15 minutes per day.


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