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BQ20Z75,为什么电流校准之后,检测电流还是比实际电流大5~10mA?



我是初学者。用2000mA校准了很多次,校准之后还是这样:

多出来的5~10mA是保护板自己消耗的电流吗?如果是这样,那待机功耗也太大了吧?

哪位高手能指点一下?谢谢!