Features: Environmental protection, free from the power of the sun, take the green road. High conversion efficiency, our polysilicon efficiency can 17%. Light and thin, easy to use and carry. Widely used, suitable for security cameras, laptops, car batteries, automobiles, RVs, ships, airplanes, satellites, space stations, outdoor farming, planting, tourism, solar street lights, etc. The charging temperature is -20-70 degrees Celsius. Flexible solar panel with a maximum bendable 30 degree arc. Short circuit and surge protection technology keeps you and your equipment safe. It is durable, waterproof and has a long life. Controller:1. Use industrial grade master chip.2. Large-screen LCD display, adjustable charging and discharging parameters, with power-off memory function.3. Complete 3-stage PWM charge management.4. Built-in overcurrent, short circuit protection, open circuit protection, reverse connection protection, all self-recovery type, does not damage the controller.5. Dual USB output, maximum current up to 25A. Support for iOS mobile phone charging.6. Double MOS anti-backflow circuit, ultra low heat.Specifications:Condition: Brand NewMaterial: ABSMaximum power (Pmax): 20wMaximum power voltage (Vmp): 18vMaximum power current (Imp): 1.3ASTC (standard test conditions): 1000W / meter, AM = 1.5, 25 ° CMaximum system voltage: 1000VOutput: USB 5V and DC 18VSystem voltage: 12V/24V adaptiveRated charging current: 10ARated discharge current: 10AMaximum PV voltage: up to 23V for 12V batteries. At 24V, the maximum is 46V.Floating charge voltage: adjustable at 13.7VDischarge cut-off voltage: 10.7V adjustableDischarge recovery