On Mar 14, 2011, at 9:37 AM, Michael Watterson wrote:

>> you can use lithium thionyl batteries..

> yes used to see those on some PCs and industrial controllers 3.x volts
> and about 2/3rds AA size.


Actually available in an wide variety of sizes.
http://www.tadiranbat.com/ is a major supplier.

Note that these are also designed for low discharge rates.

BillW

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