Mastervolt MasterShunt 500 300A Continuous P/N 77020100 Battery Charger CZoneMastervolt MasterShunt 500 30A Continuous Part n 77020100 Battery Charger This digital shunt is used to manage battery charge and provided accurate battery information such as voltage, current, charge status and remaining time. Thanks to the integrated, programmable system clock, you can automate your system. You can set the generator to start automatically when the batteries are nearly drained. With data storage, you get a complete overview of the