Solar Charge Controller, 20A 12V/24V PWM Solar Panel Controller Auto Setting Adjustable LCD Display Solar Panel Battery Regulator with Dual USB Ports ] Wide Compatibility: The Charger Controller 20A rated discharge current solar is automatically compatible with 12V or 24V system, suitable for lead-acid batteries: OPEN, AGM, GEL. Dual 5V/3A USB output ports support phones, tablets, or other devices that require 5V. Reliable Protection: The solar charge controller provides protection against overcurrent, short circuits, reverse polarity, low voltages and overloads, and is a reliable protector for your equipment. Smart: The built-in industrial microcontroller automatically manages, remembers various user-defined parameters, and data will not be lost when the battery runs out. Once the voltage is too low, the solar controller will automatically shut down. Functional LCD Display: Intuitive LCD display, clear status and data indication, switchable mode and parameter configuration, suitable at home, industry, business, etc. Easy to use: the charge controller must first connect the battery, then the solar panel, and finally the load! You can change settings with a simple one-touch operation.