Energizer CR2032 Lithium Battery Description: Replacement batteries for many cycling electronics. Sold in a pack of 5. Features: Replacement batteries for bike lights, bike computers, computer sensors, and heart rate monitors 33% lighter weight than Alkaline batteries Excellent low temperature performance Multi-Drain has a 7-year shelf life combining Low Drain (LD) and High Drain (HD) batteries of the same voltage into one battery Specifications: Size: CR2032 Package: Card of 5