The Spektrum One Piece Battery Adapters are simple solutions to mismatched plug types. For hobbyists who require the flexibility to use batteries with different connectors, these adapters offer solid and reliable connections between normally incompatible components. Each is a single piece, low resistance, gold plated adapter. Additionally, each adapter contains an internal Smart connection wire on IC connectors. These adapters are a great solution for Chargers, Cars and Trucks, Airplanes, Boats, Drones and more!