Spektrum One Piece Battery Adapter Overview: 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! Spektrum One Piece Battery Adapter Features:: Simple, small, and convenient Allows for solid and reliable connection between mismatched components Compatible with EC2, IC2, EC3, IC3, EC5 and IC5 plug types* Contains internal Smart connection wire on IC connectors One-piece adapter * NOTE: IC2 battery is not compatible with EC2 device