The Toshiba CR1616 is a reliable long-lasting 3-Volt Lithium coin cell battery. With 3 Volts of power, this battery is designed to give long-term power. 

Each card contains 5 batteries. 

**DISCLAIMER** All Button/Coin batteries will now be required to be childproofed according to "Reese's Law".  To comply with Reese's Law (15 U.S.C. § 2056e) and 16 C.F.R. § 1700.15, qualifying button cell and coin batteries are supplied in child-resistant packaging.