The Grainger 170ER9 is a 9V alkaline battery made by Duracell. It has a voltage of 9 volts, a height of 48.5mm, diameter of 26.5mm, and weight of 45g. The battery has a cylindrical shape with raised positive and negative terminals. It is designed for use in smoke detectors, electronics, toys, and other battery-powered devices that require a 9V power source. The battery has a shelf life of 5 years when stored properly. It provides reliable power while minimizing leakage or corrosion. This alkaline battery offers safe, dependable performance.