Battery fuel gauge for IoT devices

Nordic Semiconductor’s algorithm-based battery fuel gauge solution is an industry unique approach to battery management in IoT devices. It is highly accurate, consumes ultra-low power and does not require any extra components, let alone a dedicated chip. Tools for a streamlined development process enable easy integration of battery state of charge and state of health reporting into the application.

Why choose Nordics’s fuel gauge?

Accurate state of charge

Precision preserved over the lifetime of the battery

Ultra-low power and low cost, requiring no extra components

Accurate state of health

Accurate battery capacity and charge cycle tracking for timely replacement

Fleet battery management via cloud

Introduction

Knowing how much energy is left in a battery is only part of delivering a reliable product. To truly optimize battery‑powered devices, it’s just as important to understand how the battery changes over time. Nordic’s fuel gauge & battery health solutions work together to provide accurate, real‑time insight into both remaining state of charge and long‑term battery state of health.

Nordic’s algorithm-based fuel gauging and battery health inputs real-time voltage, current, and temperature data from the PMIC into a mathematical battery model in the SoC software. The SoC uses this to accurately estimate the battery’s state of charge and state of health. The fuel gauge algorithm and battery model require only minimal flash memory and work just as well on 3rd part MCUs. There is no dedicated chip or licensing fees involved - just minimal flash memory usage and existing hardware costs.

Fuel Gauge illustrasjon

Platform support

The fuel gauge algorithm runs on any Arm Cortex M4 or M33, like those found in the nRF52, nRF53, nRF54, nRF91 and nRF93 Series. If you require support for any other device architecture, please contact the Nordic sales team for more information.