Duracell 2025 lithium coin batteries are designed for use in keyfobs, small remotes, scales, wearables, sensors, medical devices (glucometers, digital thermometers), sports devices (heart rate monitor, bike accessories) Duracell lithium coin batteries have child safety pack: Tamper-proof pack with double blister so that it is impossible for a child to open without scissors Duracell 2025 lithium coin batteries use high-purity lithium