About this item This fits your . Make sure this fits by entering your model number. Using advanced double-peak or multi-peak tracking technology, the controller can still accurately track the maximum power point when the solar panel is blocked or part of the panel fails, resulting in multiple peaks in the IV curve. The built-in maximum power point tracking algorithm can significantly improve the energy utilization efficiency of the photovoltaic system, and the charging efficiency is increased by 15% to 20% compared with the traditional PWM method. The combination of multiple tracking algorithms can accurately track the best operating point on the IV curve in a very short time. This product has the best MPPT tracking efficiency up to 99.9%. Advanced digital power technology makes the energy conversion efficiency of the circuit up to 98%.