1. Using advanced dual- or multi- tracking technology, when the solar panel is shaded or part of the solar panel is damaged, the I-V curve have multiple peaks, and the controller can still accurately track the maximum power point 2. Built-in maximum power tracking algorithm can significantly improve the energy utilization efficiency of the photovoltaic system, which is about 25% higher than the traditional PWM charging efficiency 3. Combining multiple tracking algorithms, it can accurately track the optimal working point of the I-V curve in a very short time. 4. The MPPT tracking efficiency can reach up to 99.9% 5. The circuit energy conversion efficiency is as high as 98% with the use of advanced digital power technology Supports different types of battery charging programs such as batteries, sealed batteries, open batteries, lithium batteries, etc. It has a current limiting charging mode. When the power of the battery panel is too large and the charging current is the rated current, the controller automatically reduces the charging power to work at the rated charging current It can support instantaneous high current startup of capacitive loads Support automatic identification of battery voltage It has a fault LCD display to facilitate users to determine system faults Built-in over-temperature protection mechanism. When the temperature exceeds the set value of the device, the charging current decreases linearly with the temperature, thereby reducing the temperature rise of the controller and avoiding high temperature damage to the controller It has a temperature compensation function, automatically adjusts the charging and discharging parameters, and increases the service life of the battery Complete electronic protection function It uses a metal shell with better heat dissipation performance Lithium battery 0V charging function Color:As Shown Material:ABS+Aluminum Package Contents: 1 * Solar Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.