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TWL: RE: Adding batteries

From: Joe Engel (no email)
Date: Tue Sep 09 2003 - 12:19:48 EDT

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    Hi Joel:

    That sounds like a good plan to me, assuming you realize that Grp 27
    batteries have quite limited AH capacity; probably in the range of 70 AH
    each for a total of 150 AH or so. That's a pretty small house bank but
    it will work. Also, in the world of Grp 27 batteries there are a very
    wide range of types and qualities because this is a common vehicle size.
    I would assume you have purchased good quality, marine, deep-cycle
    batteries for this purpose.

    We have a similar setup on our 24 foot Tolly with a Grp 27 starter
    battery and 2 additional Grp 27 deep cycle house batteries. These are
    isolated by a simple off/1/both switch.

    As the Yandina folks mentioned here, there are various options for
    wiring a simple house bank. You can do it with a manual switch, or with
    a diode isolator, or with a combiner. Both the isolator and the
    combiner alternatives can be combined with switches.

    Joe Engel
    Portland, Oregon
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