Solar powered energizer has low impedance technology with modular circuitry for fast and easy repair service. Energy efficient and environmentally friendly solar unit has a 6V battery included and installed. Easy battery check and battery saver with built-in handle for easy transport. Built-in mount fits to T posts, round posts, wood posts, and flat surfaces. Suggested use is for up to 200' of fencing, ideally for gardens with 1 to 3 strands of wire. 2 yr warranty includes lightning damage.