Russell McMahon 14:17 2005-12-15:
>Best choice seems to be "sealed lead acid" (SLA)

-snip-

>Requirement:
>
>Rechargeable battery.
>Good shelf life under self discharge.

? Have you found a SLA with good shelf life ?
If so where?
I thought they self discharge in a half year or so.
(And after that is pretty damaged.)
Also they last only five years -if handled nicely.

I would try using some tithium.  There are several chemistries, but i think Li-ion is best because of cost as it is miost used)

Then you may also place a green sticker on the product saying Laad free, etc.

/Morgan
--
Morgan Olsson, Kivik, Sweden

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