Fuel-gauge ICs help prevent battery clones

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https://www.electronics-lab.com/fuel-gauge-ics-help-prevent-battery-clones/

Maxim’s family of ModelGauge m5 standalone fuel gauges provides SHA-256 authentication with a 160-bit secret key to make it harder to clone battery packs. The ICs also implement the ModelGauge m5 algorithm, which converts raw measurements of battery voltage, current, and temperature into accurate state-of-charge (SOC%), absolute capacity (mAhr), time-to-empty, and time-to-full readings. by Susan […]

Battery-pack fuel gauge with SHA-256 authentication prevents pack cloning

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https://www.electronics-lab.com/battery-pack-fuel-gauge-sha-256-authentication-prevents-pack-cloning/

Implementing pack-side battery gauges in portable devices is easier and more secure, Maxim asserts, with its ModelGauge m5 portfolio of MAX17201/MAX17205 and MAX17211/MAX17215. Fuel gauging can be difficult because battery voltage varies with temperature and load, while coulomb-counting requires sophisticated compensation to eliminate offset accumulation errors. Maxim’s ModelGauge m5 fuel gauges include a sophisticated algorithm […]