I know about these
http://www.tech2000astronomy.com/zap/ and am considering to order considering I am tired of cables going everywhere, but was wondering if it would be feasible to convert a standard dew strap (built for 12V DC) to a battery operated one using a 9V alkaline (simple 9V clip and a female RCA plug). Or maybe make it a 12V pack like Vixen used to make (8 x 1.5V D cells in series)
Or is there going to be some odd impedence issues etc, or maybe damage the strap - I believe under-voltage can be as bad for an item as over-voltage.
Appreciate the tech help on this one.