The PX28L (28L) is only a little larger, 6volts, pricey ($6-7). Radio shack has pretty good information like that. Better yet, how about checking the local drug store... If they carry it, it won't be hard for a user to find. BTW, a rechargable 28L would be popular if there was such a thing. John Ferrell http://DixieNC.US ----- Original Message ----- From: "Picdude" To: Sent: Sunday, March 07, 2004 3:06 PM Subject: [EE:] Battery selection tool/table/reference/source? Hi folks, I need to find a small battery for an alarm keyfob enclosure in which I'll be placing a PIC (12LF629) project. I can power the PIC circuit from 2V to ~5.5V, but the battery that already comes in the enclosure is a 12V (type 23A) battery. Since this will be a low-power circuit, I am hesistant to just use a 78L05 etc. There is also way too little space in there to add a DC-DC buck converter circuit. So my best option is to find a battery that is the same physical size as the Type 23A, but which puts out 6V or 3V. Any ideas where I can look up this info? Googling for "battery specifications", "battery datasheet", etc has yielded nought. Cheers, -Neil. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads