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4块电动工具锂电源掉水损坏，拆解检查内部情况，还能修复用么？
4块东城18v电动锂电源掉入水中损坏，现在测试输出电压都低，拆解后看下它内部保护板和电池组情况，电池电芯基本全换，保护板也坏了2块，这种锂电源还有修的必要么？
电动工具电源维修大全263/417
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