Hi Russell,

It is true of almost all chemical reactions (see the Arrhenius Equation,
which I'm sure you already know). I remember seeing a graph somewhere but I
don't remember where. A quick Google search for "lead acid battery life
versus temperature" yielded:

http://mathscinotes.wordpress.com/2012/12/24/lead-acid-battery-life-math/

Sean



On Sun, Jun 30, 2013 at 3:59 PM, RussellMc <apptechnz@gmail.com> wrote:

> On 1 July 2013 06:28, Sean Breheny <shb7@cornell.edu> wrote:
> > That's a very good point, John. Battery "calendar life" is exponentiall=
y
> > dependent on temperature.
>
> Another useful assertion.
> I'd not seen it put that way.
> I can imagine why  that sort of result may be seen, but I'd suspect
> that in many practical situations it would tend to be swamped by other
> treatment.
> ie may tend towards being true of a battery in pure float use when
> maintained at optimum voltage etc, or whatever.
>
> Do you have a reference for that and any insights as to confounding or
> swamping effects and to which chemistries or construction methods it
> applies*?
>
>
>
>
>      Russell
>
>
> * eg Lead Acid, GM, permanently floated at xxxV with cycles of yyy every
> ... .
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