. Product Overview
1. Use single-chip microcomputer control, has the advantages of intelligent, strong adaptability, reliable function.
2. Adopts the MPPT technology, can work in the maximum power point of the I-V curves, the efficiency is up to 99%.
3. With high precision temperature detection and compensation circuit, longer battery life.
4. 12V/24V auto work, three stage of battery display, can intuitively understand of the working status of the controller.
5. Delicate structure design and highly precise circuit design, allowing the space of the controller to be maximize.
6. With over charging, over discharging, overload, short circuit and reverse polarity protection.
7. With USB 5V output, can charge different digital products.

.Installation
Instructions Please first connect the battery, and then connect the solar panel and the load in order.
The controller has reverse polarity protection internally, but if the connection error still may damage your controller.
Please make sure the voltage and current are within the rated range of controller

. MPPT Charging Introduction
The full name of MPPT "Maximum Power Point Tracking, is an advanced way of charging. The MPPT controller not only can real-time detect the power of solar panels, but also can track the highest voltage current value (VI), which make the system with the highest efficiency for battery charging. Compared with the conventional PWM controller, the MPPT controller can make solar panels with maximum power, so it can provide maximum charging current. Generally speaking, the charging efficiency of MPPT controller is 15%~20% higher than PWM mode.

Because the peak voltage of solar panels (Vpp) is around 17V and the battery voltage is around 12V, when the common controller charging, the voltage of solar panels is around 12V, which cant reach the maximum power. MPPT controller can overcome this problem, it can adjust the input voltage and current of the solar panels constantly in order to achieve the maximum input power.

At the same time, because of the different environmental temperature and light conditions, the maximum power point tracking often change. According to different conditions, the MPPT controller can adjust the parameters constantly in order to achieve the system near the maximum working point at any time.