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SBS充电电量不显示是什么问题?

Other Parts Discussed in Thread: BQ20Z40, BQ20Z45, BQ29412

我用bq20z65监测4节钴酸锂串联电池组,然后用ES软件查看参数,电池电压可以显示,如下图

但电池充电量不显示,如下图:

这是什么原因啊?该怎么解决?谢谢!