BMW Key Battery CR2450: Fit, Change, and Fix Guide

A BMW key battery CR2450 is a 3-volt, non-rechargeable lithium coin cell used in many rectangular BMW Comfort Access keys, especially F-Series fobs. Verify the code printed on the existing battery before purchasing, because BMW keys also use CR2032 cells and rechargeable VL2020 batteries. Replacement typically takes 5 minutes. Key Facts A CR2450 measures 24.5 […]