The Classic SL-250 MPPT Charge Controller is a simplified SOLAR ONLY version of the Classic 250 with streamlined menus. The Classic SL-250 has a graphics panel and ground fault but no arc fault or Ethernet capabilities. The Classic SL-250 has a maximum output current of 63 amps, an operating voltage of 250 volts and works with 12 to 72 volt battery systems. As with the whole Classic line, the Classic 250-SL has MidNite’s exclusive HyperVOC which extends VOC limits when needed. With a streamlined menu, these SOLAR only MPPT charge controllers are easy to setup and a breeze to install!