An RV-C capable 30 Amp MPPT Solar Controller uses Maximum Power Point Tracking (MPPT) charging with up to 98% efficiency. MPPT solar controllers optimize an RV's solar charging in all sun and tilt conditions, and are ideal for series wiring configurations. Easy to install. Compatible with "smart RV" RV-C systems, this controller comes standard in the 190-watt Solar Eclipse Kits. Easily integrates into onboard communications (RV-C) systemsThe most efficient MPPT controller for RVsCompatible with all battery types, including LithiumMaximizes all power from your solar modulesStackable: add additional controllers to expand your solar arrayOptional Bluetooth remote5-year warranty