Victron Energy SmartSolar MPPT 150/70-Tr VE.can Solar Charge Controller.

For 12V, 24V, and 48V battery systems. Maximum 150V Voc, 70A charge current. Built-in Bluetooth communication

A solar charger gathers energy from your solar panels and stores it in your batteries. Using the latest, fastest technology, SmartSolar maximizes this energy-harvest, driving it intelligently to achieve full charge in the shortest possible time. The VE.Can feature is the ideal solution for synchronized parallel operation of up to 25 controllers.