Basic Characteristics of CR2025 vs CR2016 CR2025 Diameter: 20 mm Thickness: 2.5 mm Chemistry: Lithium manganese dioxide (Li-MnO2), nominal voltage 3 volts Capacity: Approximately 200-250 milliamp hours (mAh) CR2016 Diameter: 20 mm Thickness: 1.6 mm Chemistry: Lithium manganese dioxide (Li-MnO2), nominal voltage 3 volts Capacity: Approximately 100-120 milliamp hours (mAh) ... https://www.jinftry.com/news/CR2025-vs-CR2016-Exploring-the-Complexity-of-Coin-Cell-Batteries