While size is the primary factor there still has to be sufficient juice so the coin cells are not an option. I've been sort of looking at around 600 MA just as a starting point although perhaps it doesn't need to be even that much. I have to run 14 LEDs (most small 2mm sizes), drive a speaker through a chipcorder plus the control PIC. Ideally the battery should last 30 minutes (not all sounds and LEDs are on all the time). Fifteen minutes would be the shortest time I would want to go with.
I have been looking to the point of dizzy with all the batteries out there. Always finding case of MA being good, but size being too big or size being good and MA being too low.
I'll check out your link.
Thanks.
Bart
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