3-Step+ charge method optimum efficiency so your batteries will perform better and last much longer. Designed for versatility, it charges virtually any combination of three batteries in a fast and safe way and works anywhere in the world. The ChargeMaster Plus handles worldwide AC voltages and frequencies. Resisting large voltage fluctuations and high temperatures, it keeps working in harsh environments. Powerful ConnectionsIn modern applications, all components work together. CAN-based MasterBus enables the charger to communicate with displays, shunts and power systems including communication standards like CZone, NMEA2000 and CANopen. The ChargeMaster Plus can operate as a power supply for delicate communication equipment, or during the construction phase of a boat.