Nordic Fuel Gauge v2.0 Officially Released

Nordic Semiconductor (OSE: NOD), a global leader in low-power wireless connectivity solutions, today announces the general availability of Nordic Fuel Gauge v2.0 for the nPM1300 and nPM1304 Power Management ICs, accessible now through nRF Connect SDK version 3.4.0-rc2. First previewed at Embedded World 2026 in March, the solution is now ready for production integration across the full range of rechargeable IoT products.

The release brings a level of battery intelligence previously reserved for premium consumer electronics directly into the IoT ecosystem, without additional hardware cost. For developers, this means actionable visibility into battery health – from design validation through to end-of-life field deployment – and a clear path to compliance with emerging battery-replacement legislation.

“Battery-heavy products like EVs, laptops, and smartphones have had smart systems for tracking battery health for years,” explains Geir Kjosavik, Product Director, PMIC at Nordic Semiconductor. “With Fuel Gauge v2.0, we’re bringing that same insight to any rechargeable IoT device, without adding extra costs.”

A new approach to battery monitoring

Monitoring battery health in deployed IoT devices has historically been one of the hardest problems in product development. Traditional fuel-gauge ICs rely on fixed models or coulomb counting, both of which drift over time and offer no visibility into long-term degradation. Without State-of-Health data, manufacturers cannot predict when batteries need to be replaced. Additionally, by the time end-users notice declining battery performance, the degradation is already well advanced and getting worse.

The Nordic Fuel Gauge v2.0 addresses this directly. Building on the proven State-of-Charge accuracy introduced in v1.0, the solution adds an adaptive model that continuously compares the original battery profile against actual field behavior. This delivers an accurate State-of-Health estimation correlated with charge cycle count to track long-term degradation trends. Plus, it maintains stable accuracy across the full product lifetime, even as batteries age. For devices that rely on multiple interchangeable battery packs, the algorithm tracks each pack's State-of-Health individually.

The solution requires no dedicated fuel-gauge IC. It can deliver dedicated IC-level accuracy at a lower system cost, with reduced Bill of Materials complexity, and zero power consumption during sleep. It simply uses the built-in voltage, temperature, and current measurements from the nPM1300 or nPM1304, along with a smart, host-based algorithm. 
The Fuel Gauge v2.0 runs on any host MCU or wireless System-on-Chip (SoC), including the nRF54 Series, nRF91 Series, and non-Nordic hosts.