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[问与答] 18650 电池(松下的)寿命有点短啊

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我有一个可以自己放 18650 电池的充电宝外壳,早在 2016 年左右的时候买了 6 个日本产的松下 NCR18650B ,当时一节电池要 30 块钱,对于一个充电宝可谓是下血本了。

买回来后不常出远门,用的次数不多,虽然已经将近八年了,但是平均一个月不超过 5 次循环。
大概从上个月开始,发现充不满电,最后一格电要冲很长时间,而且其中一节电池会发热,搜索都说是这一节电池快要坏了,隔膜开始漏电了,建议放电后扔掉。

干脆把 6 节电池全部测了一遍,新电池应该是 3500mah ,结果是 2 节只剩 800mah ,2 节接近 4.2v 时会发热,1 节剩 2000 多 mah ,还有一节没有测完。剩余 2000mah 可以接受,低于一千毫安时和发热的情况实在是太崩了

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