Victron Energy SmartSolar MPPT 150/45 Solar Charge Controller One Size. Using the latest fastest technology SmartSolar maximizes this energy harvest driving it intelligently to achieve full charge in the shortest possible time. SmartSolar maintains battery health extending its life. The SmartSolar charge controller will even recharge a severely depleted battery. It can operate with a battery voltage as low as 0 Volts provided the cells are not permanently sulfated or otherwise damaged. Package Contents: Victron Energy SmartSolar MPPT 150/45 Solar Charge Controller Victron Energy SCC115045212: SmartSolar MPPT 150/45 Solar Charge Controller One Size