The CR2016 3V Lithium Coin Battery is a powerful battery that provides long-lasting and reliable power. It is perfect for frequent use in car key remotes, medical devices, digital watches, fitness devices, and other electronics. It has a long shelf life meaning the battery still has lots of percentage of the original capacity, even after 10 years in storage allowing them to be stored for future use. The reason for this is that they are chemically very stable, due to the combination of lithium and manganese dioxide. Long-term discharge has been tested at all operating temperatures under low-load discharge conditions.