Red Snap'r ESP10M-RS 10-Mile Solar Low Impedance Fence Charger 10-mile range 6-volt, 12-amp battery, 0.15-joule output Reliable solar power operates up to two weeks without sunlight Fast installation on T-posts, round wood posts, Y-posts, buildings and flat surfaces with uniques, integrated mount At-a-glance indicator light flashes when energy is on the fence