1.5V. Long lasting guaranteed. 10 year power guarantee in storage. Leak-proof guarantee (For more details about our money back performance guarantee or leak-proof guarantee visit: www.Rayovac.com/MBG). Rayovac Performance Guarantee: We've spent over 110 years thinking about batteries so you can think about them less. Rayovac High Energy batteries are long lasting, guaranteed – plain and simple or your money back (For more details about our money back performance guarantee or leak-proof guarantee visit: www.Rayovac.com/MBG). High Energy: Guaranteed to provide long lasting power in high use devices. 100% recyclable card. Made in the USA with US and global parts.