EPEVER MPPT Solar Charge Controller 30A 100V PV Input Tracer 3210AN with LCD Display Negative Grounding Lithium Battery Charger Innovative MPPT technology Peak conversion efficiency of 98% Four battery type options:Sealed, Gel,Flooded,and USER Accurately recognizing and tracking of multiple power points. Die-cast aluminum design and nature cooling Temperature Sensor Connector Solar Panel, Battery, Load Connector RS485 Connector MPPT tracking efficiency above 99.5% Maximum charge conversion efficiency as high as 98% Support lead-acid and lithium-ion batteries Multiple load work modes Charging power and current limitation High-temperature charging power derating function Standard Modbus communication protocol with RS485 interface Real-time energy statistics SELECT button Remote Temperature Sensor(RTS) Interface PV Terminals Battery Terminals Load Terminals Mounting Hole 5mm RS485 communication interface ENTER button LCD Display