Brand new and high quality. Advanced tracking technology for maximum power, with efficiency no less than 99.5%. High-quality components enhance system performance, achieving a maximum conversion efficiency of 98%. Features super-fast tracking speed and tracking efficiency. Large LCD screen displays charging and discharging current, cumulative power, temperature, light control + delay control. Adjustable charging and discharging parameters with power-off memory function. Dual USB output with a maximum current of 2.5A, supporting mobile phone charging. Equipped with all necessary protection devices, system control parameters are adjustable for easy setup and use. Built-in short-circuit protection, open-circuit protection, reverse connection protection, overload protection, and reverse current protection. Low heat generation with a self-resetting function that does not damage the controller. Function: 1. Real-time display of temperature, charging current, and discharging current. 2. Automatic focus tracking charging with high charging efficiency; the charging process continuously detects and tracks in both directions. 3. Charges 12V/24V lithium batteries; super wide adjustable charging and discharging range. 4. Adjustable output delay minutes for added convenience (market availability may vary). 5. Built-in protection against overheating, overcurrent, short circuits, and open circuits; automatic controller reset upon fault elimination. 6. Dual MOS tube anti-backflow circuit, high-power charging mode, and ultra-low heat generation. 7. R5.0 solar charging DC connector, R5.0 DC lamp output connector for easy connection. Specifications: Name: LCD Screen Solar Controller PV System Power: For 12V battery solar systems (30A/40A/50A/60A/100A): Power is 360W, 480W, 600W, 720W, 840W respectively. For 24V battery solar systems (30A/40A/50A/60A/100A): Power is 720W, 960W, 1200W, 1440W, 1680W respectively. Voltage: DC 12V / 24V Display: LCD Screen Dimensions: 140x80x50mm Self-consumption: <10MA Overcharge Protection: 14.4V / 28.8V Float Charge: 13.7V / 27.4V Charge Recovery Voltage: 12.6V / 25.2V Over-discharge Protection: 10.7V / 21.4V Over-discharge Recovery: 12.6V / 25.2V Dual USB Output: 5V / 2A (for charging mobile phones, iPads, etc.) Working Temperature: -35 ℃ to 60 ℃ 12V system compatible with 18V solar panels; 24V system compatible with 36V solar panels. For 12.0 Volt Lead-Acid Batteries: Float Voltage: Set to 13.6V Discharge Recovery Voltage: Set to 12.6V Discharge Cut-off Voltage: Set to 10.7V For 12.8 Volt Lithium Iron Phosphate Batteries: Float Voltage: Set to 14.6V Discharge Recovery Voltage: Set to 13.6V Discharge Cut-off Voltage: Set to 11.0V For 11.1 Volt Lithium Batteries: Float Voltage: Set to 12.6V Discharge Recovery Voltage: Set to 11.6V Discharge Cut-off Voltage: Set to 9.6V Function: 1. Maintains battery at full charge voltage. 2. Prevents battery overcharging. 3. Prevents battery over-discharging. 4. Prevents reverse charging from the battery to the solar panels at night. 5. Reverse polarity protection for the battery. 6. Reverse polarity protection for solar panels. 7. When battery voltage is low, the controller automatically disconnects the load. The load will resume operation when the battery voltage normalizes. 8. The controller automatically sets charging voltage, float voltage, and load recovery voltage based on battery voltage class. (Parameters are default at 25℃ and locked by CPU procedure, not adjustable). 9. The controller automatically compensates charging voltage based on ambient temperature changes. 10. Lightning protection. Note: Transition: 1cm=10mm=0.39inch Please allow 0-3 cm error due to manual measurement; ensure you do not mind before purchasing.