Xplorer 30A DC-DC On-Board Solar Charge controller with Bluetooth This 30A DC/DC & Solar charge controller With a variety of charging modes, such as photovoltaic charging backup battery alone, generator charging backup battery alone, photovoltaic and generator's charging backup battery at the same time, photovoltaic charging startup battery and soon. This 30A dc-dc controller are used in dual battery system, where the alternator and the start battery are combined with the service battery(of equal or different voltages)to charge it, also take PV power to charge the service battery and start battery. PowerCatcher MPPT technology is still available for tracking the maximum power point of solarcells in a complex environment; and compared with conventional MPPT technology, PowerCatcherhas faster response speed and higher tracking efficiency, which can reach 99.9%. MPPT Controller Support a wide variety of generators such as intelligent generator and conventional generator, and automati