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我们只是想用USB口的充电器给2节锂电池充电，不需要USB通信。把D+/D-/CE/OTG悬空可以吗？
您好，disable OTG将OTG PIN接地，充电使能将CE pin 拉低 LOW.
您好，如果适配器是5V/2A，是不是一定要有D+/D-的检测？如果不检测，只能输出500mA么？
