The Vintage Archer Nickel-Cadmium Battery Charger 23-139 is a versatile car charger compatible with C, D, and 9V batteries. Made by Archer in Hong Kong, this charger is designed to hook into the car lighter port for convenient power supply. With a voltage of 9V and nickel-cadmium chemical composition, this charger is a reliable option for maintaining your vehicle's batteries. It features a manufacturer's warranty, though it is not specified.