COIN BATTERY 3V 5 pcs Long expiry CR2450 3V Lithium Battery is a button cell lithium battery rated at 3.0 volts. It is commonly used as a CMOS battery in computers, calculators, remote controls, scientific instruments, kitchen, office and personal scales, wireless doorbells, garage door remotes, watches and other small devices. The combination of lithium and manganese dioxide results in a chemically very stable battery. Long-term discharge has been verified at all operating temperatures under low-load discharge conditions. Product Safety and Compliance Details Warning This product contains a button/coin battery and is hazardous. Keep out of reach of children. Batteries can cause severe or fatal injuries in 2 hours or less if swallowed or placed inside any part of the body. Medical attention should be sought immediately if it is suspected that the battery has been swallowed or placed inside the body.