TI Launches Industry's First 26-Cell Battery Monitor with Built-In EIS for EVs and Energy Storage

Texas Instruments has introduced the BQ79826Z-Q1, a battery monitoring IC that sets two new industry benchmarks simultaneously: the highest cell count per device in its class, and an integrated electrochemical impedance spectroscopy (EIS) engine that can detect battery degradation from inside the cells themselves before a problem becomes dangerous.

Electrochemical Impedance Spectroscopy is a diagnostic technique that measures the internal chemical state of a battery cell by sending small AC signals through it and analyzing the response. Think of it like an EKG for batteries  instead of just measuring voltage and temperature from the outside, EIS reads what's actually happening chemically inside each cell in real time.