Nordic's differentiations
Accurate
The algorithm-based fuel gauge solution prevents surprise shutdowns by delivering reliable and accurate battery information - providing ±3% state of charge accuracy comparable to Coulomb counters for rechargeable batteries over the lifetime of the battery, with primary‑cell accuracy depending on battery chemistry
Ultra-low power
Designed for ultra‑low power operation, the fuel gauge runs only when the system is active—using just a few microamps—to deliver accurate battery information without draining energy in sleep, extending battery life and improving reliability in IOT devices.
Low cost
Running on the host MCU, the algorithm‑based fuel gauge uses real‑time voltage, current, and temperature data from the PMIC to eliminate the need for a separate fuel‑gauge chip—reducing components, simplifying design, and lowering system cost without compromising accuracy or user experience.
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Technology |
Nordic Fuel Gauge |
Open circuit voltage measuring |
Coloumb counting fuel gauge IC |
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Pros |
+ High accuracy |
+ No additional energy usage |
+ Best accuracy |
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+ Ultra-low power consumption |
+ No additional cost added to your bill-of-materials |
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+ No current draw at system-off |
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+ No added cost to your bill-of-materials |
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+ Battery health support |
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+ Adapts to battery ageing and over lifetime |
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+ Adapts to cell-to-cell variation across production batches |
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+ Accurate across the full operating temperature range |
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Cons |
- Needs to be supported by PMIC |
- Very low accuracy |
- Draws current even at system-off to keep coloumb counter running |
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- Severly affected by temperature |
- Expensive, adds components to your bill-of-materials (BoM) |