This solar battery charge controller by AIMS Power features a smart tracking algorithm using MPPT charging technology and has less power loss performing at 97.5-99% efficiency, maximizing energy harvest and varies with weather conditions. Temperature compensation protection using the included battery temperature sensor. Charges 12, 24, 36 and 48V solar systems with multistage charging technology and adjusts according to battery type. LCD displays key information such as battery voltage, solar panel voltage, solar panel charging current and charge mode. RS485 connection block for computer monitoring of all charge controller functions. Backed by a 2 year warranty. Quality heatsink cooling – no fans needed or thermal derating Battery type selector and user defined charging voltage PV input, battery output and load control ports Stackable Over engineered components generating less heat Efficient up to 99% Low self consumption Rugged case Over temp protection Overload, short circuit, high and low voltage protection RS485 port for computer monitoring CE, ETL to UL1471 and RoHS compliant PV Operating Voltage: • 15-150Vdcat12V • 34-150Vdcat24V • 50-150Vdcat36V • 60-150Vdcat48V Rated PV input: • 12V – 500 Watts • 24V – 1000 watts • 36V – 1500 watts • 48V – 2000 watts • Maximum battery current: 40 amps • Max PV open circuit voltage: 150Vdc • Self power consumption: <4 watts • Efficiency: 97.5% • Protections: overload, short circuit, high voltage, high temperature, low voltage and auto correct • Monitoring: RS485 port for computer monitoring • Optimal cooling case design – built for extreme conditions • Battery types: gel, sealed, AGM, flooded, lithium, user defined (adjustable voltage) • 4 Stage charging: bulk, absorption, float and equalize • Enclosure: IP43 protection, metal • Cooling: heatsink • Humidity: 100% non-condensing • Temperature compensation: -5mV⁰C / 2V with BTS • Temperature range: -25⁰C to 60⁰C or -13⁰F to 140⁰F • Conformal coated for marine environments