177 U10 is a rechargeable, lightweight, and long life General Purpose battery by GP batteries, the world’s leading brand of consumer batteries. This general-purpose battery boasts an impressive 10-year shelf life, making it ideal for applications where long-term storability and minimal maintenance are required. Additionally, the 177 U10 is leak-proof and constructed of the highest-grade materials for extreme durability, making it a great choice for use with a variety of portable devices. It is lightweight, making it easy to carry, and can provide reliable and consistent power for years.