>The replacement gel thingie is a molded plastic snap-in >unit that includes a D cell. yeah, shades of the Polaroid film cartridge with the 6V flat package battery in it. I would be surprised if there was not some way in which the bait refill could not include a battery change. However I come back to the look that it is probably easier to replace the whole contraption, and the act of opening the bait outlet turns on the electronics. The chances of the bait release mechanism lasting in conditions which at times can be like rainforest, without corrosion, even with battery changes, is not high at all. Some sort of regular maintenance/replacement of the mechanism is bound to be required. changed the tag as we're getting away from PIC's -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads