HOW TO REPLACE THE 12V BATTERY IN THE BMW I3 GUIDE

EV Channels Review

This comprehensive DIY guide from BMWBLOG details the process of replacing the 12V auxiliary battery in a 2017 BMW i3. The video emphasizes crucial differences compared to internal combustion engine vehicles, particularly the need to disconnect the high-voltage system for safety. It highlights the use of specific tools and the Remy AUX18L battery, costing around $140. A key takeaway is the necessity of registering the new battery with the car using the Bimmerlink app and an iCar Pro OBD2 interface to ensure optimal performance and longevity. The reviewer notes that while the car functions without registration, it's a recommended step for proper battery management. The guide is praised for its detail, though it acknowledges the complexity and potential for error, advising viewers to proceed with caution.