Lithium Coin Batteries provide reliable, long-lasting power for your specialty devices. Use these 3 Volt batteries in medical devices, security devices, fitness devices, electronics and more. They have up to a 10-year guarantee in storage so you can be confident these lithium coin button batteries will be ready when you need them. To help ensure the safety of your children, they have been designed with child-resistant packaging. Batteries are equivalent to DL2025 and CR2025.