Easy to Use: Plug and play design, compact and portable. Easy to carry in a bag or pocket and store, suitable for indoors or outdoors while providing reliable charging. DC8mm Adapter for Easy Connections: DC8mm adapter enables direct connection between a portable power station and a solar panel via the DC7909 interface for straightforward device to device connectivity. Durable and Performance: Connector adapter supports voltage from 5 to 20 V and up to 100 W. Temperature resistance range is minus 10 C to plus 40 C. Securely connected with stable transmission performance. Wide Compatibility: DC7909 to connector enables compatibility with various specifications of solar panels, portable power stations and solar generators. Widely used in model airplanes, model cars, model boats, lamps, household appliances, electric heating solar panels, RV boats. Use Scenarios: Use at outdoor locations such as campsites to keep a portable power station charged from a solar panel. Power hobby projects like model airplanes, cars or boats. Run lamps and small appliances at home, in an RV, or on a boat using solar power.