Up to 50km Output energy 4.6J Stored Energy 6.5J Max Voltage 9kV 32 hectares / 80 acres   APT: Adaptive Power Technology Powers up to 50km of fence Robust weather-resistant system Battery charge state indicator Energizer overload indicator Day/night sensor Powered by battery (sold separately) or mains power adaptor (included) Adaptable mounting options (wall, fence wire, wooden post and slides onto Y-picket post) Lightning protection +100Ah battery or greater recommended Many programmable options via the LCD handheld remote (optional accessory, sold separately) including adjustment of fence voltage and pulse rate, independent day/night setting, battery voltage reporting and fence performance monitoring FEN00450 Agri 50 Flyer Agri Energizer Selection Chart