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bq78350R1电池电量跳变

Other Parts Discussed in Thread: BQ76920

请教大家一个问题,我用的bq78350R1+bq76920,采用NCR18650BM 3200mAh 四串两并的电池,这里电池的放完电的电压应是2750mV,我这里出现的问题是电池充满后做放电,放到电量51%的时候,两端的电压到3500mV,然后接着就直接跳变到7%了,电量就只剩300多mAh了,我想知道应该怎么设置使电量校核准确,怎么去设置Pending EDV的值