Model YCX 003 MPPT Solar Charge Controller Overview A 12V/24V adaptive MPPT solar charge controller designed for reliable battery management in home, commercial, and industrial solar systems. The controller combines accurate MPPT tracking, threestage charging, an intuitive LCD, and multiple automatic protections to extend battery life and optimize energy harvest. Key benefits Improved battery life: MPPT threestage charge management reduces overcharge and deep discharge stress, helping batteries last longer. Higher charging efficiency: Continuous maximum power point tracking adjusts to changing panel and environmental conditions to capture more usable energy. Clear monitoring and control: LCD display and adjustable parameters let you monitor temperature, charging and discharging currents, and set charge and discharge thresholds to match different battery types. Robust protection and reliability: Builtin protections recover automatically after faults, reducing risk of controller damage and downtime. Flexible compatibility: Automatic 12V or 24V system recognition and adjustable voltage setpoints make it suitable for a variety of lead acid and lithium battery systems. Main features MPPT technology: Continuous maximum power point tracking with bidirectional MOSFET antibackflow circuit and power charging mode for higher charging efficiency and lower heat generation. Precise monitoring: 16 bit ADC sampling for accurate realtime data on temperature, charging current, and discharging current. LCD display and configuration: Intuitive display for status and data, with mode switching and adjustable charging and discharging parameters including floating charge, cutoff, and recovery voltages. Threestage charge management: Bulk, absorption, and float charging to protect batteries while maintaining full charge. Automatic 12V/24V adaptation: System recognizes battery voltage automatically when first connected; recommended sequence is to connect the battery before connecting solar panels. Multiple protections: Overcurrent, short circuit, reverse connection, open circuit, and overheating protection. All protections autorecover when faults are cleared. Nonvolatile settings: Builtin microcontroller retains userconfigured parameters even if the battery is fully discharged. Controller will autoshutoff if battery voltage falls below safe limits. Technical specifications Model: YCX 003 Material: ABS and ROHS compliant components System voltage: 12V or 24V adaptive Supported panel voltages: 12V, 18V, 24V, 36V Maximum PV input voltage: 50V Floating charge voltage: 13.7V default, adjustable Discharge cut off voltage: 10.7V default, adjustable Discharge recovery voltage: 12.6V default, adjustable Standby current: less than 10 mA USB output: 5V, up to 2A Optional rated currents: 40A, 50A, 60A, 100A Maximum PV input power: 40A: 520W at 12V, 1040W at 24V 50A: 650W at 12V, 1300W at 24V 60A: 780W at 12V, 1560W at 24V Operation tips Connect the battery first, then connect the solar panels. Ensure the battery has sufficient voltage at initial setup so the controller correctly recognizes the battery voltage. Use the LCD to review realtime temperature and current readings and to adjust charging parameters to match the battery chemistry. The controller will automatically shut off if battery voltage becomes critically low and will resume when conditions to safe levels. Typical applications Offgrid home systems: Maintain and protect house battery banks used for lighting, small appliances, and backup power. Remote or industrial equipment: Power and protect batteries for sensors, remote monitoring stations, or site lighting where reliable autonomous regulation is required. Recreational vehicles and boats: Efficiently charge onboard batteries from solar panels while preventing reverse discharge and overdischarge. Why choose this controller This MPPT controller delivers precise tracking, configurable charging parameters, and comprehensive protections in a durable ABS enclosure. It is suitable for a range of 12V and 24V battery systems and provides clear realtime data to help optimize solar charging and extend battery lifespan.