The Victron Bluesolar 20A MPPT 100/20 Solar Charge Controller Regulator is a high-quality and reliable product designed for off-grid solar power systems. With a maximum input voltage of 91-100V and a current output of 11-19A, it is suitable for various systems operating at 12V, 24V, or 48V. This solar charge controller from Victron Energy, manufactured in the Netherlands, features MPPT charging mode for optimal performance. With protection properties for discharge protection and an IP43/IP22 rating for electronic components/connection area, this controller is a great choice for those looking to harness alternative energy supplies in all daylight conditions.
More expensive than other brands but it collects more electricity than other brands , charges batteries intelligently and , in my experience, generally last longer.
Download the full instructions as the booklet included is actually a hindrance.