12V24V Solar Charge And Discharge Controller Dual USB Port LCD Solar Cells Panel Charge Regulator Features: 1. Built-in industrial grade controller 2. Full 3-stage PWM charging management 3. Large LCD display, all parameters are adjustable 4. Dual mosfet reverse current protection, low heat generation 5. Dual USB output, current up to 2.5A, support cell phone charging 6. Built-in short-circuit protection, open-circuit protection, reverse protection, overload protection function 7. Suitable for solar green light, solar light box billboard, solar light, house solar power, ship solar power, outdoor survival solar power Specification: 1. Material: plastic shell + iron back plate 2. Working voltage: 12V24V 3. Self-consumption: less than 12mA 4. Float charging voltage: 13.8V27.6V (adjustable) 5. Undervoltage protection: 10.7V21.4V (adjustable) 6. Operating temperature: -35-60 degrees Celsius 7. USB output: 2 way USB output, 5V2.5A 8. Charger controller specification charging mode: 3 kinds 9. Weight: about 320g 10. Size: about 16.8 x 9.2 x 4.15cm