Connected to both 12V nominal panel and a 48V panel and they both worked great. MPPT charge controllers have really come down in price over the years, and victron is a somewhat respected name.This is just an important heads up and the true purpose of my review. This model does not include integrated Bluetooth technology. For connectivity you have to buy a dongle, currently around $40 to connect, or just buy the Bluetooth model of this unit for only an additional $15.00. If you don't want or need connectivity, fine- buy this one and save a few bucks. But I love the information that the Bluetooth connectivity will give you and in my mind it's worth the extra 15.00. In a portable setup it will allow you to position your panels to optimal angles and see incoming watts, as well as the state of the charge of the battery. You can also easily make adjustments to the charging profile if desired.