Direct solar driven operation This product allows photovoltaic panels to directly drive the solar controller, simplifying the charging setup and reducing intermediate wiring. Direct dc5521 connection The dc5521 interface connects directly to the controller, eliminating wiring difficulties and improving overall wiring reliability. Faster charging for mobile devices When solar power is available, mobile phones and power banks can charge more quickly through the controller. Compatibility and performance Designed to work with standard photovoltaic panels and solar controllers that use a dc5521 interface, enabling straightforward integration into existing solar systems. Use scenarios Off grid camping or caravanning: connect a portable solar panel to the controller to charge phones and power banks while away from grid power. Remote work sites or cabins: set up a simple solar charging station with minimal wiring for reliable device charging. Emergency outages: use solar power to maintain charging for essential mobile devices during power interruptions.