DUAL USB 100A MPPT SOLAR CHARGE CONTROLLER: Using innovative MPPT technology high tracking efficiency up to 99%; Please refer to the information if you are not familiar with Mppt technology: There are many kinds of MPPT technology, Our Solar Controller Mppt technology is to detect the maximum charging current, not the boost type or the automatic charging of the solar panel voltage. MULTIPLE INTELLIGENT PROTECTION: Solar controller has short-circuit protection, open-circuit protection,reverse protection, over-load protection. Fully 3-stage PWM charge management, improve system efficiency and prolong the life span of the battery. For protecting the lifespan of your battery, once the voltage of the battery drop below 8V, the solar controller will turn off automatically. MULTI-FUNCTION LCD DISPLAYS: This controller is 12V/24V automatically adapt,first connect the battery,then connect the solar panels,when you first use it, make sure the battery has enough voltage,so that the controller can recognize the correct battery type. BUILD-IN INDUSTRIAL MICRO CONTROLLER: 16AD sampling accuracy, temperature Charging current, discharge current accurate real-time display, power generation at a glance. automatically manage the working of solar panel and battery in solar system to support charging. EASY TO INSTALL AND OPERATE: The charge controller should connect the battery first, then the solar panel, and finally the load! The disassembly sequence is contrary to the wiring order.Dual mosfet Reverse current protection, low heat production. Charge controller not to connect the grounded to make the light run. It Can charge the battery and supply power to the load at the same time. We offer a 30-days money-back guarantee and 12-month warranty for quality-related issues.