Epever Tracer4210AN MPPT Solar Controller 12V/24V Auto Max Input 100V Charger Controller The Epever Tracer4210AN MPPT Solar Controller is a versatile and efficient solar charge controller designed to optimize energy harvest from solar panels while providing reliable charging for both 12V and 24V battery systems. With a high tracking efficiency of over 99.5% and compatibility with both lead-acid and lithium-ion batteries, this controller maximizes charging performance and minimizes power loss. Its advanced features include a 100V max PV input, multiple load work modes, and a standard Modbus communication protocol with RS485 interface for real-time monitoring and control. • MPPT tracking efficiency above 99.5% • Compatible with both lead-acid and lithium-ion batteries • 100V max PV input allows more panels connected in series • Supports both 12V and 24V battery systems • Standard Modbus communication protocol with RS485 interface for remote monitoring and control. Item is new and never used open box. I had purchased but never installed