The Ring 3v Lithium Battery is a small button ring battery suitable for key fobs, watches, some cameras, toys, PDA’s and organisers, or small security devices. Lithium batteries give a far better performance than alkaline batteries in extreme cold temperatures, meaning the Ring 3v Lithium Battery is well suited to use in outdoor tools or accessories.

These batteries generally have a shelf life of 10+ years, so why not stock up now.