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/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 + 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: 12/24V Current: 30A / 40A / 50A / 60A / 100A(optional) USB Output: 5V, 2A Max. Standby Current: