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我现在有一个项目需要用到电池的监电量测，电池的过充、过放、短路等功能的产品，请推荐一款合适的IC。电池方案为4节锂电池串联，电芯为聚合物锂离子电池，单节电池的容量为4000mAh以下，电量计的输出通信接口为SMBus 。
可以考虑bq20Z40，采用阻抗跟踪法，最多可支持4节锂电池串联。
