This Monitoring Screen, a high-precision meter, is the perfect companion to Renogy Smart Lithium Iron Phosphate Battery Series. Instead of measuring the current flowing in/out of the battery bank using a shunt, it can communicate directly with the battery management system (BMS) and obtain more accurate state of charge (SoC) readings compared to traditional battery monitors. Other readings including voltage, current, capacity, remaining time, warning code, and number of paralleled batteries are also available to help users avoid abnormal conditions and extend the lifetime of the battery bank.