Tool/software:
Hi,
We're using the bq27421 gas gauge, and the host micro is responsible for configuring the design capacity, design energy, terminate voltage, and taper rate. After setting these, we issue an exit_resim. We're reporting the battery % every 30s approximately. The SoC increased gradually from 15% to 98%, but then suddenly dropped to 79%, and after that it climbed gradually back up to 86% and was maintaned there.
We're trying to understand the reason behind this sudden drop from 98% to 79%. Is this behavior expected due to the Impedance Track algorithm adjustments, or could it be due to a misconfiguration on our side?
Also, just to confirm, the parameters (design capacity, design energy, etc.), must be configured again if the device (that contains gas gauge) is turned off correct?
Any insights would be appreciated. Thanks!