即使前一天電池充滿電了，怎麼會沒電呢？

當你有一臺相當新的膝上型電腦時，你最不想經歷的就是電池的問題。但是如果發生了你怎麼辦？今天的超級使用者問答帖子為一位沮喪的讀者提供了一些建議。...

當你有一臺相當新的膝上型電腦時，你最不想經歷的就是電池的問題。但是如果發生了你怎麼辦？今天的超級使用者問答帖子為一位沮喪的讀者提供了一些建議。

今天的問答環節是由SuperUser提供的，SuperUser是Stack Exchange的一個分支，是一個由社群驅動的問答網站分組。

圖片由英特爾自由出版社（Flickr）提供。

問題

超級使用者讀者user285oo6想知道他的膝上型電腦的電池怎麼會沒電，儘管前一天已經充滿電了：

My laptop is nine months old and I use the laptop’s battery power sparingly since I have it connected to a power outlet most of the time. This problem just started four days ago and, as of this post, my laptop is only running on outlet power, so there is no question about the battery wearing out.

Every night the battery is fully charged at 100 percent, yet the next morning it shows a “3 Hours 18 Minutes Until the Battery is Fully Charged” message when I turn it on.

I had tried running the Dell eSPA Diagnostics, but was unable to access it on Windows 10 (at that time). When I asked about the problem in the Dell community forums, their resp***e was to use the online diagnostic scan. The online diagnostic scan would not complete when I tried it (it failed after one hour).

After a round of fresh updates for my Windows 10 system, I was finally able to get the ePSA Diagnostic Scan to work and it passed. The thermal information for the CPU Thermistor was 52 degrees Celsius, but things did not fully shut down even after a complete turn-off. I just learned this recently when my laptop bag was hot and when I removed the laptop from the bag, it was showing a yellow status light for the battery (even after doing a complete shut down).

這到底是怎麼回事？

答案

超級使用者貢獻者Jamie Hanrahan為我們提供了答案：

Batteries can and do fail for all kinds of reas***. The most likely explanation here is that your battery has developed a weak cell. This can happen even with relatively new batteries after very little use, particularly if the laptop’s configuration is such that the battery is kept warm by the rest of the laptop.

The only practical cure is to replace the battery. Since your laptop is only nine months old, it may be covered by warranty.

It is possible that the charge management hardware for your laptop is at fault. This would clearly be a warranty issue as well. In any case, the only way to really diagnose it is to try a different battery. Sorry about that, but it happens.

特別說明

您還可以使用本文中的說明生成電池執行狀況報告：

如何在Windows 8或Windows 10上生成電池執行狀況報告

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