Procell Constant Power Alkaline Battery Type PP3 9V / Box of 10Procell Alkaline Constant Power 9V industrial batteries are ideal for powering low drain professional devices which require constant current over a long period of time such as smoke carbon monoxide detectors. Product Features Type PP3 Reliable Performance Excellent resistance to corrosion Designed to meet all major quality, safety and environmental standards Operating in temperatures from 20C to 54C Box of 10 batteries Product Specifications For full