PRODUCT DESCRIPTION America`s first solar-powered electric fence charger! Laser trimmed, computer precision, solid state circuitry provides reliable, powerful low impedance shock to end of the fence. Uses free energy from the sun for maximum shock – day or night. Eliminates need for expensive battery replacement or inconvenient recharging. At a glance built-in performance meter shows you the fence condition – good, marginal or bad. Features latest state-of-the-art solar panel with over 42% more battery charging power. Will charge battery even on cloudy days with maximum power in direct sunlight. Totally weather-proof for outdoor use. FROM THE MANUFACTURER Parmak #DF-SP-LI Solar Pak 6-Low Impedance 6-Volt Battery Operated 25-Mile Range Electric Fence Charger