Oh thought of another thing to consider is the current if you do end up trying that battery thing I would get a variable resistor to limit the current so you would connect it in series between one of the handholds and the battery. Might want to test on lowest and work up. Also maybe a metal spring could be used as a switch to break connection quickly if you don't want to use electronics. I have not seen or experienced any positive effects from a none pulsed voltage nor do I believe that would fall under the category of a "zapper". Good luck.