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世达的电动锂电源太少见，内部做工怎么样，电芯正常却无法使用
这次维修一个不太常用的世达电动工具锂电源，故障说是长期未使用损坏，经过检测并不是电池故障，那到底是去哪里原因，电源做工怎么样？
电动工具电源维修大全285/417
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