Features Advanced MPPT Technology: use state-of-the-art Maximum Power Point Tracking, allowing for efficient solar control even with shaded or partially damaged panels through accurate maximum power point tracking. Intelligent Current Limiting: Integrated current limiting mode protects the system when solar panel power exceeds limits, ensuring the MPPT solar controller operates at the rated charging current for safety and longevity. Versatile Battery Compatibility: Supports a wide range of battery types including sealed acid, gel, and lithium batteries with up to 99% tracking efficiency, providing flexible and optimized charging solutions. Efficient Dual Fan Cooling: The digital power technology and dual fan system ensure high circuit energy conversion efficiency and reliable operation even under high current loads, preventing overheating and ensuring stable performance. Comprehensive Protection and Monitoring: The controller automatically identifies battery voltage and provides a fault LCD display for easy troubleshooting, along with over-temperature protection, temperature compensation, and parameter adjustment for a user-friendly experience. Feature: 1. Automatic Voltage Identification: The solar controller supports automatic battery voltage identification. With fault LCD display, convenient for users to determine the system fault. With lithium battery 0V charging function. Built in over temperature protection mechanism, temperature compensation function, and automatic adjustment of charging and discharging parameters. Specification: Item Type: MPPT Solar Controller Material: ABS System Voltage: 12V, 24V, 36V, 48V Auto No Load Loss: ≤0.4W Maximum Solar Input Voltage: 180V(25℃), 150V(-25℃) Battery Voltage: 9-64V Maximum Power Point Voltage Range: Battery Voltage +2V-150V Rated Load Current: 40A Conversion Efficiency: ≤98% MPPT Tracking Efficiency: >99% Temperature Compensation Coefficient: -2mv/℃/2V (Default) Operating Temperature: -10℃-+65℃ Protection Class: IP21 Electromagnetic Compatibility: For EN61000, EN55022, EN55024 Communication Mode: Support RS485 Altitude: ≤3000m Package List:1 x Solar Controller1 x Instruction Manual4 x Screw4 x Expansion Screw Package List 1 x Solar Controller 1 x Instruction Manual 4 x Screw 4 x Expansion Screw