Lithium Coin Battery: Duracell's 2450 3V coin batteries provide reliable, long lasting power for your medical devices, security devices, electronics and more. Long Lasting Power: Duracell coin batteries are engineered for long lasting performance. Child-Resistant Packaging: To help ensure the safety of your children, Duracell Lithium Coin batteries come in a child-resistant packaging. Guaranteed for 10 years in Storage: Duracell Lithium Coin batteries are guaranteed for 10 years in storage.