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BQ34Z100 / state-of-charge varies without load

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Dear BQ Experts,

on behalf of my customer I'd appreciate if you could take a look on below:

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we are using a TI BQ34Z100 Fuel Gauge Sensor in our Application.

In our tests we noticed some strange behavior.

Often the state-of-charge changed its value over night from circa 15% to circa 7% (and backwards) without any load.

Also the state-of-charge wasn’t stable. So it varied highly in the range between 5% and 25%.

Is this a normal behavior of this sensor? Maybe our flash settings are not correct. I send you the configuration settings as well.

A possible option is to use the BQ34Z100-G1 instead. Is there anything else changed in this new sensor than the bugfix for the ALERT-pin?

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There are already e2e posts about a migration to the -G1, but the answer is only posted offline. Appreciate if you could add this as well.

Best regards,

Uli


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