The Victron Energy Smart Battery With integrated cell balancing Can be parallel and series connected Bluetooth app available to monitor cell voltage and temperature Requires one of these BMS-es: VE.Bus BMSrecommended for systems with our inverter/chargers. smallBMSrecommended for use in small systems. Battery Management System BMS 12/200recommended for use in Automotive and Marine systems having DC-loads and Alternators. Smart BMS 12/200recommended for use in Automotive and Marine systems having DC-loads and Alternators. Smart BMS CL 12/100recommended for use in Automotive and Marine systems having DC-loads and Alternators. Lynx Smart BMSrecommended for use in large systems. Features of the Smart Battery Rugged A lead-acid battery will fail prematurely due to sulfation:If it operates in deficit mode during long periods of time (i.e. if the battery is rarely, or never at all, fully charged).If it is left partially charged or worse, fully discharged (yach