Fuel gauges in battery-powered devices monitor the state-of-charge (SOC), a vital parameter for managing the device's battery pack comprised of multiple cells with varying conditions. Rather than directly measuring SOC, fuel gauges estimate it using measurable variables like current, voltage, and temperature. This video explores traditional methodologies like Coulomb counting and cell modeling, highlighting their benefits and drawbacks. Learn how MPS adopts a unique approach, combining a hybrid estimation method with an in-house cell model extraction process for superior SOC accuracy.
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