MPPT solar controller adopts industrial grade main control chip with 16 level AD sampling accuracy. Complete 3-stage charging management enables the controller to achieve efficient and quick intelligent charging, effectively protecting the battery. Built-in multiple circuit protections, safety and reliable, very suitable for home, industry, business, etc. Features: Applicable to 3 kinds of batteries: leadacid battery (12V or 24V automatically adapted), lithium batteries, lithium iron phosphate batteries. Industrial-grade main control chip, 16-level AD sampling accuracy, accurate real-time display of temperature, charging current and discharging current, power generations at a glance. Automatic focusing MPPT tracking charging, high charging efficiency, uninterrupted detection during charging, bi-directional focusing tracking, with power-off memory function. Large LCD display, charging and discharging current display cumulative power generations and discharging power query temperature display light control and time delay control adjustable charging and discharging parameters. Complete 3-stage charging management enables the controller to achieve efficient and quick intelligent charging, effectively protects the battery and prolongs its service time. Built-in multiple circuit protections, overheat, overcurrent, short circuit, open circuit protecting, reverse connection protecting, when the fault is eliminated, the controller automatically recovers, without damaging the equipment. With two-way Mosfet reverse current protecting, high power charging, ultra-low heat generations. Support 4 USB output, the maximum current is 2A, you can charge your phone. Specifications: Rated Voltage: 12 or 24V Current: 30A or 40A or 50A or 60A or 100A(optional) USB Output: 5V, 2A Max. Standby Current: