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BQ27220: Initial bq27220, SOC question.

Part Number: BQ27220
Other Parts Discussed in Thread: GPCCEDV

Hi Expert,

When the gauge POR, the USB will plugin to my device first, then connect the battery. So, the gauge will get the high SOC. If I can't change the Steps, does any method could calibrate the delta-V, to get the right SOC?

For example, the battery is 3.5V, connect to the device with USB adapter, the Vbat will be 3.7V. If the Vbat is 3.5V, maybe the SOC is 50%. But if the Vbat is 3.7V, the SOC would be 60%.

Thanks!