Russell,

I would recommend that you contact A123 directly and ask for this
information. My company has been able to get some info on this and it
looks promising (i.e., calendar life is almost a non-issue for most
realistic applications).

Sean


On Thu, Mar 18, 2010 at 11:08 AM, Russell McMahon <apptechnz@gmail.com> wro=
te:
> Is anyone working (or playing :-) ) with =A0LiFePO4 / Lithium Ferro Phosp=
hate
> batteries.
> eg A123 cells ex De Walt battery packs or whatever?
>
> I'd be interested in thoughts on lifetimes and especially on "calendar li=
fe"
> (as opposed to cycle life) .
> The technical information on this seems about non existant. It makes sense
> to expect that it would be much better than standrda LiIon, but how much
> better is the question.
>
>
> =A0 =A0 =A0 =A0 =A0 =A0 =A0Russell
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