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品牌筋膜枪3年没有使用过损坏，这样故障还能修复么，如何操作
锂电池小电器长期不用一定要按时充电，就像这款李宁筋膜枪我3年没使用，出现了无法充放电故障，经过检测电池组电压0，已经完全损坏，看下新电池组组装和更换方法
家用常见常用小电器维修合集263/305
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