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如何延长笔记本电脑的电池寿命

即使是最耐用的笔记本电脑电池最终也会耗尽. Here's everything you need to know to maximize the amount of time between visits to the power outlet.

November 24, 2021
(Photo: Zlata Ivleva)

谁想急匆匆地冲到电源插座去抢救笔记本电脑的电池? That's no fun, especially if your family is working and learning from home these days in various corners of the house that may not have a convenient socket nearby. Luckily, modern laptops 比他们的前辈更有效率吗. 如今,甚至是便宜的台式电脑和一些 gaming behemoths 一次充电可以持续8小时以上. Ultraportables 经常忍受14个小时或更长时间.

Still, the inconvenient truth is that the battery in your PC or Mac laptop won't last as long as the manufacturer advertises unless you pay attention to some key factors: your power settings, how many apps you're running, 甚至你工作的房间的温度. 好消息是,这些问题都不需要花太多精力去解决, 一旦你知道要调整哪些设置. 让betway体育来看看最高收益, 用最省力的方法最大限度地利用你笔记本电脑的电池.


使用Windows性能管理工具

The first stop on our battery-life betterment tour is the Windows performance management tool. 在Windows 10中,它是通过任务栏中的电池图标访问的滑块. 在Windows 11中,你会发现它 Settings > System > Power & Battery > Power Mode. It aims to group all of the settings that affect battery life into a few easy-to-understand categories.

Windows 10电池性能滑块

生产你的电脑的公司决定了电池滑块控制的具体设置. 但总的来说,请记住以下原则:

  • The Best Performance 模式是为那些愿意牺牲电池运行时间以获得速度和响应能力的人设计的. In this mode, Windows won't stop apps running in the background from consuming a lot of power.

  • The 更好的性能(或推荐) mode limits resources for background apps, but it otherwise prioritizes power over efficiency.

  • The Better Battery mode delivers longer battery life than the default settings on previous versions of Windows.

  • The Battery Saver mode, 只有当你的电脑不插电时才会出现一个滑块选择, 将显示亮度降低30%, 阻止Windows更新下载, 停止邮件应用同步, 并暂停大多数后台应用程序.


对于MacBook:在macOS上使用电池设置

Recent Mac laptops running up-to-date versions of macOS have extensive battery and power settings that you can control. 在macOS Monterey中,打开系统首选项应用程序并点击电池.

电池设置在macOS蒙特雷

确保勾选了“电池供电时稍微调暗显示器”, 和“在电池供电时启用小睡”是不选中的. (启用“能量小睡”功能后,你的MacBook就会进入睡眠状态, 机器会时不时醒来检查更新. 禁用它会让你的MacBook完全处于休眠状态,直到你选择唤醒它.)在最近的MacBook Pro笔记本电脑上, the display brightness adjusts to 75% when you unplug the computer from power if you have "Slightly dim the display while on battery power" enabled.

这取决于你的MacBook和macOS版本, 你可以在节能选项面板中看到其他选项. These include "Optimize video streaming while on battery" for disabling HDR video playback and "Optimized battery charging.“一些mac电脑也有能量模式设置, 哪个和上面描述的Windows性能管理工具非常相似. 如果你看到能源模式在电池部分的系统首选项, 你有以下选择:

  • Low Power:减少能源消耗,增加电池寿命.

  • Automatic:让你的Mac自动使用最好的性能水平.

  • High Power:增加能源使用,以提高持续工作负载期间的性能.


简化工作流程:关闭应用程序,使用飞行模式

如果你花了很多时间工作, 以更省电的方式调整笔记本电脑的使用是个好习惯, such as by sticking to one app at a time and closing everything else when you're not using it. 这有点像房间空着的时候关灯. 如果你总是在厨房和储藏室之间来回走动的话, 或者在火狐和必威betwayappWord之间, 务必让两组灯(和应用程序)都开着(和打开着). But if you're just cooking, 或者只是在YouTube上看视频, 你最好关掉和关闭其他一切.

Airplane mode on Windows

除了关闭其他程序,而您的单任务, 考虑在Windows中启用飞行模式, 或者在macOS中关闭Wi-Fi和蓝牙, 如果你知道你要编辑的文档不需要上网. 除了减少干扰, Airplane mode eliminates a significant source of battery drain: not only the wireless radios themselves, 还有后台应用程序和进程,它们一直在使用它们, 比如更新器和推送通知.


关闭使用大量电力的特定应用程序

Having multiple apps and processes running on your system at the same time will chew through battery life more quickly, and chances are you probably aren't actively using everything that's currently running on your PC. 在Windows系统中,要找到耗电程序,第一步就是设置(Settings)应用程序.

应用程序列表与功率使用Windows

Type "See which apps are affecting your battery life" into the Windows 10 search bar for a list of apps that are consuming the most power. 在Windows 11中,您可以在电源中访问此列表 & “电池使用”下的“电池设置”窗格. 如果你看到一个你很少使用的应用程序占用了大量的电力,确保你关闭它. Often, 这些应用程序是你在后台打开后就忘记了的, 比如Spotify或adobereader.

Next, type "See which processes start up automatically when you start Windows" into the search bar, or open the Task Manager app. 在启动选项卡,你会看到每一个实用程序运行,只要你启动你的电脑. 任何像“下载助手”或“助手”这样的名称通常是安全的禁用. For example, 除非你经常打开Spotify的播放列表, tracks, 或者从网页浏览器的链接中获取相册, 你可以禁用Spotify网络助手.

要在macOS中执行类似的应用程序清除,请搜索“用户” & Groups, 然后单击“登录项目”页签, where you'll find a list of apps that are designated to run in the background when you start up your Mac.


调整图形和显示设置

如果你的笔记本电脑有一个强大的图形处理器, 你可以确保只有游戏或其他图形密集型应用程序需要使用它, while everything else can get by using the more efficient on-CPU silicon for graphics processing. 如果您的系统使用Nvidia GeForce图形, open the GeForce control panel (typically found in the Windows notification area on the right side of the taskbar), then click on the Program Settings tab to assign each app to a specific graphics-processing chip. Allocate the GeForce discrete chip to games and photo- and video-editing apps like Adobe Photoshop and Premiere, 同时将其他所有内容分配给集成图形.

图形和显示设置

在Mac上执行类似的任务, open the same Battery preferences pane mentioned earlier and make sure the "Automatic graphics switching" option is checked, 就像上图中来自macOS Big Sur的截图. You don't have the same kind of fine-tuned control over each program like you do in the GeForce panel, so you'll have to trust macOS's judgment when it comes to which app should use which graphics accelerator.


Take Heed of Airflow

Most laptops now come with lithium-polymer batteries that require much less maintenance than batteries of a decade ago, thanks as much to software and firmware improvements as innovation in the battery technology itself. 你不再需要定期对电池进行满电放电来校准它, 你也不必担心电池耗尽会损坏你的笔记本电脑.

MSI GE76 Laptop Vents
(Photo: Molly Flores)

不过,你必须小心高温,因为高温会加速电池的损耗. 最大的问题来自于通风口的物理阻塞. Dust buildup is one problem, which you can take care of by cleaning the laptop's vents and fan. (定期用一罐压缩空气吹掉一些灰尘.)一个更常见的突然出现的问题, though, 是把笔记本电脑放在枕头上还是放在毯子上, 哪些设备既能阻挡风扇,又能保留系统散发的热量. 为了避免这种情况,只在桌子或书桌等坚固的表面使用笔记本电脑, 它不会弯曲和阻碍气流或冷却.


关注你的电池健康状况

所有的电池都会随着时间的推移失去充电能力,最终需要更换. 时不时地评估一下电池的健康状况是个好主意.

On an Apple MacBook laptop, 看看你的电池是否快用完了, hold the Option key and click the battery icon in the menu bar to reveal the battery status. 如果您看到“立即更换”或“服务电池”消息, 你的电池的功能很可能远低于它原来的容量.

You can find more detailed information on how many charging cycles your battery has endured by opening the System Information app and navigating to the Power tab. 检查循环计数值 betway体育名单上的最高评级 知道还剩下多少个循环.

Windows battery report

对于Windows 10中等效的电池健康指示器, 您需要卷起袖子,深入了解命令提示符的世界. Here's the complete guide 关于如何使用命令提示符生成Windows电池报告.


查看电池管理设置

Some recent laptops can now automatically monitor the temperature history and charging patterns of the battery. 通过制造商提供的软件, this information can be used to adjust "full" charging to remain below 100% of the battery's capacity if you don't regularly use it. (减少充电循环次数有助于延长电池的使用寿命.)

Battery management macOS

使用这种监视是一个好主意, but if you'd rather disable this management software to ensure you're always charging the battery to maximize capacity, 许多制造商都允许你这么做. 在运行macOS Catalina或更高版本的MacBook上, 从“betway体育”菜单中选择“系统偏好”, then click Energy Saver. 单击“电池运行状况”,取消选择“电池运行状况管理”选项,然后单击“确定”. Windows笔记本电脑的使用说明因制造商而异; here's Dell's how-to guide.


Carry a Battery Backup

Finally, the easiest way to ensure that you always have enough battery power is to bring along an external battery pack.

这些外部电源就像充电器一样插入你的笔记本电脑. 它们的价格通常在100到200美元之间, 但它也带有适配器,可用于许多不同型号的笔记本电脑. They can be used on more than one system, and even for other devices, such as your phone or tablet.

Portable battery pack

这些策略将帮助你充分利用你的电池. 如果你想买台新的笔记本电脑, however, 电池运行时间是你的关键问题之一, check out 以下是betway体育测试过的电池续航时间最长的笔记本电脑的概要.

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Tom Brant

汤姆是PCMag硬件团队的副总编.com. 自2015年以来,他一直以编辑、记者和分析师的身份报道消费科技领域. In his spare time, 他写过很多不同的话题,包括婆罗洲的雨林, Middle Eastern airlines, 以及大数据在总统选举中的作用. 米德尔伯里学院毕业生, 汤姆还拥有纽约大学新闻学和法语研究硕士学位.

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