Learn how to diagnose and troubleshoot a MacBook Pro battery that is not being detected, focusing on the BQ20Zxx battery power management chip in this 24-minute video tutorial. Explore step-by-step techniques for identifying and resolving issues related to the battery management system, gaining valuable insights into the inner workings of MacBook Pro power components. Discover practical tips and methods for testing and repairing the BQ20Zxx chip, enhancing your skills in electronics repair and laptop maintenance.