我们的笔记本电脑让我们比以往任何时候都更具移动性，但仍然总是在寻找方便的充电插座。如果你正在给笔记本电脑充电，需要在它还在运行的时候换个插座，会不会损坏它？今天的超级用户问答帖子回答了一位好奇的读者的问题。

今天的问答环节是由SuperUser提供的，SuperUser是Stack Exchange的一个分支，是一个由社区驱动的问答网站分组。

图片由Alan Levine（Flickr）提供。

问题

超级用户读者Donna想知道在笔记本电脑运行时拔掉电源插头是否安全，然后再插回去：

Am I damaging my Hewlett-Packard laptop by leaving it running, unplugging it from an outlet, then walking a few feet to the next outlet and plugging it back in? My brother-in-law says that I am.

在笔记本电脑运行时拔下电源插头，然后再插回电源，安全吗？

答案

超级用户贡献者Journeyman Geek和Schwern有我们的答案。首先，记者怪人：

No, it should be fine. Laptops are designed to switch between battery and main power.

Stuff to watch out for? Tripping hazards. While barrel connectors are fairly robust, they have been known to fail, especially with a sideways “impact” force. Completely unplugging the power connector would mitigate both this and the risk of tripping. There are special mechani**s for laptop HDDs that park the head in case you drop it.

In essence, anything that can kill a laptop while moving it would kill it anyway. I have had a few desktop divas experience the same failure modes, so it is not especially dangerous to move a laptop.

随后是Schwern的回答：

Your brother-in-law has an outdated view of how rechargeable batteries work. Older laptops used NiCd batteries, which were susceptible to the memory effect. Their maximum charge could be reduced if they were repeatedly partially discharged and then charged. There were all sorts of attempts to mitigate this, including waiting until the battery was discharged before charging it again. It is debatable whether the memory effect was real or not.

Modern laptops use lithium-ion batteries, which have no such problem. They also have sophisticated hardware and software to monitor the battery, keeping it in good condition and preventing anything a c***umer is likely to do from harming it.

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