This document describes the implementation of a fuel gauge based on STM32F103x. The product uses single-cell Li-Ion battery fuel gauge technology and has dual selectable power input sources, 12-bit ADC for battery fuel capacity monitoring. It is based on the Micro STM32 (ARM Cortex-M3 core) family. RoHS compliant.
The STEVAL-ISQ008V1 is an evaluation board designed to demonstrate fuel gauge technology based on the STM32F103x microcontroller family. It utilizes single-cell Li-ion battery fuel gauge technology to monitor battery capacity, predicting remaining capacity and displaying its status. The system employs Coulomb counting, continuously monitoring both IN and OUT current to calculate battery capacity in mAh.
| Battery technology | Single-cell Li-ion |
|---|---|
| Power input sources | USB connection or external DC power source 5 V |
| ADC resolution | 12-bit |
| Microcontroller core | ARM Cortex-M3 |
| Compliance | RoHS compliant |
The document states that battery capacity is measured in mAh.
It monitors and integrates the current flowing through the battery to calculate capacity.