As for the electric fence, I figured I'd install a 480volt 3-phase service, and alternate bare conductors of all three phases around the hives, that way when a bear tries to get in, it will be just like the hot dog-and-nails experiment we did in school... Then when I go out to check the bees, I can carve off a nice roast as well ;-) .
Now, for reality lol. I have the charger and other parts, it's ac powered since I will be setting them up around 100 ft from a pole barn and I'll set a post and receptacle near the hives. I planned on alternating live and ground wires in addition to the typical ground rods.