1、Maximum Parallel Connection for 12 Units: The 100A MPPT controller can parallel connect up to 12 units, increasing the total capacity of the solar system and enhancing overall power output. Ideal for large scale solar systems, improving reliability, stability, and flexibility in maintenance and management. 2、Multi Stage Charging Algorithm: Integrates 3 charging modes (bulk, equalization, float). With a three stage battery charging mode, the system optimizes the charging cycle and includes adaptive boost charging to prevent overcharging, extending battery life effectively. 3、Dual Cooling, Efficient Heat Dissipation: solar charge controller is built with die cast aluminum, ensuring excellent heat dissipation and reduced power consumption. Equipped with a noiseless intelligent silent fan, the upgraded bladeless cooling system is quieter and more effective for RVs, commercial vehicles, boats, yachts, and solar systems. 4、Support for Various Battery Types: Compatible with various 12, 24, 36, 48V batteries, including acid, sealed, gel, AGM, flooded, lithium, and user defined batteries, offering easy switching through the control system. Includes lithium activation feature when battery type parameter is set to lithium. 5、Wide Range Voltage Power Support: Supports high PV input power voltage. The charger controller can accept solar voltages of up to 160V. For 12V system batteries, the recommended maximum input power is 1200W; for 24V, it's 2400W; for 36V, it's 3600W; for 48V, it's 4800W. 6、MPPT Solar Charge Controller: Solar charge controller is compatible with 12V 24V 36V 48V system voltages, featuring innovative MPPT (Maximum Power Point Tracking) technology with a tracking efficiency up to 99% and peak conversion efficiency up to 97%. 7、Comprehensive Battery Charging Safety: Internal safety include PV array short circuit safety, overcurrent safety, load safety, PV polarity reverse safety, battery polarity reverse safety, over temperature safety, ensuring safe operation. Item Type: Solar Charge Controller Material: Aluminum Alloy, PVC Rated Charging Current: 100A Size: Approx. 315 x 195 x 80mm / 12.4 x 7.68 x 3.15in Maximum PV Open Circuit Voltage: 160V Operating Voltage: 12, 24, 36, 48V Charging Technology: MPPT Charging Algorithm: 3 Stage Battery Voltage Range: 9-60V Conversion Efficiency: ≤98% Maximum Power Point Tracking Efficiency: >99% Temperature Range: -35℃ to 45℃ Humidity Range: ≤95%, No Condensation Altitude: < Approx. 3000m / 9842.52ft 1 x Solar Controller 1 x Temperature Sensor 1 x Parallel Terminal 4 x Screws 1 x Instruction Manual