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博世12v锂电源不耐用，它的拆解检测更换比较难，一个视频了解透
12v博世手电钻锂电源，使用一段时间后电池组不耐用，咱们看一下电池组更换过程，有两个重点比较难，一是负极线链接，二是如何判断锂电源更换完成后功能是否正常
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