The Texas Instruments' bq34z100 is a fuel gauge solution that works independently of battery series-cell configurations, and supports a wide-range of Li-Ion and LiFePO4 battery chemistries. Batteries from 3 to 65 V can be supported through an external voltage translation circuit that can be controlled automatically to reduce system power consumption.

The bq34z100 device provides several interface options, including an I²C slave, an HDQ slave, one or four direct LEDs, and an alert output pin. Additionally, the bq34z100 provides support for an external port expander for more than four LEDs.