The Woodward BL20400 is a high-performance, switch-mode battery charger designed for demanding industrial applications, including generator sets, switchgear, and engine-driven equipment. This versatile charger features a universal AC input and a selectable DC output for both 12V and 24V battery systems. Its advanced multi-stage charging algorithm ensures optimal battery performance and extends battery life by preventing overcharging. Built to withstand harsh environments, the BL20400 includes comprehensive protection against short circuits, reverse polarity, and overvoltage, while offering features like temperature compensation and alarm outputs for reliable system monitoring. Its compact design allows for easy installation via DIN rail or panel mounting.