Murata CR2430-BEABAE Button cell CR 2430 Lithium 300 mAh 3 V 5 pc(s) | Conrad.com
Amazon.com: Duracell 2430 3V Lithium Battery, 1 Count Pack, Lithium Coin Battery for Medical and Fitness Devices, Watches, and more, CR Lithium 3 Volt Cell : Health & Household