The 8pk Duracell CopperTop C Alkaline Batteries with Recloseable Package are reliable and long-lasting power sources for a variety of consumer electronics devices. With a voltage of 1.5V and a chemical composition of alkaline, these batteries offer consistent performance for single-use applications. The recloseable package helps to prevent leaks and ensures easy storage for the batteries. Additionally, the California Prop 65 Warning indicates that the product contains chemicals that may pose a health risk if ingested or otherwise exposed. Overall, these Duracell batteries are a practical and safe choice for powering devices in the consumer electronics category.