MA DC/DC Controller (Charge & Discharge) 30A/40A 150Vdc MPPT solar charger for off-grid PV systems. Supports dual connection to PV, battery, and load with multiple operating modes. Compatible with various battery types, ideal for residential and commercial energy storage. High integration saves space and wiring. 2-series/more parallel solar panel support, natural cooling, silent operation. Equipped with TTL, RS485, CAN (RV-C protocol), and Bluetooth with mobile APP control for smart energy management.More