The Gallagher 028450 PowerPlus B180 is a high-performance 1.8 Joule electric fence energizer, ideal for permanent electric fences up to 18 km (11 miles). This versatile energizer offers flexible power options, operating from a 12V battery, mains power (with optional adapter), or solar power (with optional panel), ensuring continuous operation for small to medium-sized farms. Key features include a large rotary dial for quick fence voltage checks, a battery save option to extend battery life, and a robust, weather-resistant casing designed for durability in outdoor conditions. It delivers 1.2 Joules of output energy and a maximum voltage of 9000V, making it effective for containing various livestock.