1. Improved Technologyquality internal materials, imported original chips, low power consumption, and reliable circuit design. The cost of raw materials is nearly twice that of controllers in the same range. Threestage charging: fast charging, balanced charging, and float charging. Automatic battery balancing. The battery casing is made of flameretardant material with overheating protection. quality snapon terminals ensure safety and reliability. 2. Battery ParametersCompatible with 12V/24V leadacid batteries. Five standard battery types: sealed leadacid, gel leadacid, open leadacid, lithium iron phosphate, and ternary lithium. 3. Safety and IntelligenceIncludes overvoltage protection, overcurrent protection, charging shortcircuit protection, overcurrent protection, shortcircuit protection, and overcurrent protection; battery overvoltage and undervoltage protection; internal overheating protection and lightning protection. 4. Convenience and DetailBuiltin Bluetooth functionality, allowing you to monitor everything at a glance via the mobile app. The screen displays battery status, solar panel status, load status, and temperature readings. You can remotely control and monitor all functions of the PWM solar charge controller anytime, anywhere via a smartphone or other device. Use the mobile app to track power generation and consumption statistics.