TI also introduced the bq27541, which resides within a battery pack or on the system’s main board in an embedded, non-removable battery. The device also provides secure battery pack authentication, using the SHA-1/HMAC authentication algorithm.
Impedance Track technology accurately predicts battery capacity instantly under all operating conditions, including battery age, temperature and discharge behavior. Today, TI ships millions of battery fuel gauge ICs with Impedance Track technology to customers worldwide in applications ranging from notebooks to smart phones.