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    Re: What do offshore recreational navigators really do?
    From: Brooke Clarke
    Date: 2005 Jun 7, 15:09 -0700

    Hi Peter:
    Modern battery chemistries, like Lithium Sulfur Dioxide and others have
    a 100% capacity shelf life which is stated to be at least 10 years and
    has yet to be really figured out.  I have some of these batteries that
    test at 100% after 13 years.  The common "123" photo battery is in this
    very long shelf life category.  Of course you would need a GPS receiver
    that used a battery of this type, like the military PLGR (AN/PSN-11) or
    use and adapter.  One of the products I'm currently desigining is a plug
    to fit the very common BA-5590/U LiSO2 battery for just such applications.
    But your point is well taken.  Keep It Simple Stupid (KISS) results in
    all kinds of benefits.
    Have Fun,
    Brooke Clarke, N6GCE
    w/Java http://www.PRC68.com
    w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
    . . . .
    >>... for $1K I could buy four high-quality GPS receivers and a whole lot of
    > As an engineer you might like to calculate the quantity, weight, cost, and
    > keeping quality issues of amassing enough batteries to power handheld GPS
    > receivers over the period needed for an extended passage, along with the
    > difficulties involved in replacing them regularly along the way, in what are
    > the charmingly undeveloped places we sail so far to find. It doesn't stack
    > up.

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