(Parker Mccrory) Magnum Solar Pak 12 Fence Charger is a medium to high-powered low impedance fencer shocks through wet weeds and brush. The solar unit eliminates re-charging, thus saving you time and money. Comes complete with sealed 12-volt battery and weatherproof fencer case. Has built-in performance meter. 2-year warranty on fencer, 1 year on battery. Charges up to 30 miles of fence (2.9 joules output).