Jinx wrote: >>>Do you actually need a 12V supply ? LDO micro-current regulators >>>I've seen (MCP1700 for example, 1uA active) have an input limit of >>>6V or 10V >>> >>> >>> >>No, I DON'T need 12V. I don't WANT 12V >> >> > >OK OK, only asked > > Sorry, I wasn't upset... I guess I shouldn't use caps for emphasis. > > >>are small enough (except for the coin cells, which kind of defeat the >>purpose of this enclosure. >> >> > >3 x SR45 - 4.5V, 60mAh > >http://www.atcbattery.com/index.cfm?fuseaction=browse&id=11826&pageid=98 > Good point. I saw button cells at RS but I sort of discounted stacking them. But after seeing the hoops that I need to jump through to make the other two options work (N-cell or 12V remote battery) this might be my best bet. I was hoping for the power density of a lithium cell in case I use a pager motor. But if I don't use the pager motor, these should work great. --Steve. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist