Features a innovative intelligent tracking algorithm that maximizes the energy from the solar PV module(s) and recharge the battery, with high tracking efficiency up to 99% and max conversion efficiency of 98%. Automatically detect 12/24/36/48V direct current system voltages, reliable and practical to use. Suitable for battery types such as sealed leadacid, colloid, and lithium battery, etc..Features:This intelligent controllers built-in DSP controller with high working performance, suitable for various off-grid solar applications, it protects the battery from being over-charged and over-discharged.Features a innovative intelligent tracking algorithm that maximizes the energy from the solar PV module(s) and recharge the battery, with high tracking efficiency up to 99% and max conversion efficiency of 98%.3-stage recharging ways design, constant current, constant voltage (absorption voltage), float recharge.4 battery recharging modes design for a quick, efficient battery recharging process, they are Bulk-Charge/Boost-Charge/Float-Charge/Equalization.LCD display with backlight, and there are 4 buttons to maneuver though the menus, and support adjust parameter value, and has restore function.The recharging process has been optimized for long battery lifespan and improved system performance.The comprehensive self-diagnostics and electronic protections functions can prevents damage from installation mistakes or system faults.Automatically detect 12/24/36/48V direct current system voltages, reliable and practical to use.Multiple protections, overcharging, over-discharging, overload, and short circuit, and reverse are protected.Suitable for battery types such as sealed leadacid, colloid, and lithium battery, etc..It has a reactivation feature to awaken a sleeping lithium battery.The controller can be mounted using the existing mounting holes or using the included mounting brackets.Die-casting aluminum design to ensure fine heat dissipation performance.