(Parker Mccrory) Deluxe Field Solar Pak 6 Fence Charger is a medium powered low impedance solar fencer shocks through wet weeds and brush. Has the latest state-of-the-art solar panel with over 42% more battery charging power. Six volt sealed battery when fully charged will operate for 21 days in total darkness. Charges up to 25 miles of fence. Comes with built-in performance meter. 2-year warranty on fencer, 1 year on battery. (1.4 joule output).