iPad 在电池寿命方面非常可靠。无论(Whether)您是在Safari中浏览互联网，还是在 Netflix 上疯狂观看视频(binge-watching videos on Netflix)，它都能保证大多数日常任务的屏幕开启时间长达 10 小时。
但是，Apple 的平板电脑并非没有电池消耗问题。流氓(Rogue)进程、未优化的应用程序和资源密集型设置以及其他各种原因可能会导致它比平时更快地使用电池。
以下提示可帮助您解决 iPad、iPad Air和 iPad Pro上的电池消耗问题。
1.强制重启iPad
有时，恶意进程会迅速消耗 iPad 上的电池。如果电池指示器无明显原因开始急剧下降，那么很可能就是这种情况。强制重启可以阻止这种情况。
使用物理主页按钮强制重启 iPad(Force-Restarting an iPad With a Physical Home Button)
同时按住顶部(Top)和主页(Home)按钮，直到您在屏幕上看到Apple标志。(Apple)
强制重启没有物理主页按钮的 iPad(Force-Restarting an iPad Without a Physical Home Button)
按下并释放提高音量(Volume Up)按钮，按下并释放降低音量(Volume Down)按钮，然后按住顶部(Top )按钮，直到您在屏幕上看到Apple标志。(Apple)
2.更新系统软件
如果您刚刚升级到更新版本的 iPadOS，由于后台活动的高峰，您最初会体验不到出色的电池寿命。不过，随着您使用该设备，它应该会逐渐改善。
此外，您必须安装新的增量系统软件更新，因为它们几乎总是包含针对持久性电池相关问题的关键修复。如果您的 iPad 上禁用了自动 iPadOS 更新，请前往“设置”(Settings) > “通用(General)” > “软件更新”(Software Update)以手动安装它们。
3. 检查应用更新
未优化的应用程序也可能导致 iPad 上的电池快速耗尽。在任何 iPadOS 发布周期的早期阶段，这都是一个巨大的问题，因为应用程序开发人员经常需要时间来更新他们的应用程序以与新的系统软件保持一致。
因此，定期检查应用更新非常重要。长按主(Home)屏幕上的App Store图标并选择更新(Updates)。如果您看到任何新更新，请点击全部更新(Update All)以安装它们。
4.强制退出并重新打开应用程序
如果某个应用程序在更新后仍然耗尽电池电量（或者如果没有可用的新更新），请尝试强制退出并重新打开它。
(Swipe)从屏幕底部向上滑动并暂停一秒钟以调出App Switcher。然后，将应用程序拖到屏幕顶部以强制退出它。退出应用程序切换器(App Switcher)，然后重新打开应用程序。
5.禁用定位服务
iPad 上的某些应用程序和小部件依赖定位(Location) 服务(Services)才能正常工作。例如，天气(Weather)小部件使用该功能显示与您当前位置相关的天气相关信息。但是，定位(Location) 服务(Services)最终会很快耗尽电池电量。
要制止这种情况，请先转到Settings > Privacy > Location Services。然后，您可以为非必要的应用程序和服务禁用定位(Location) 服务。(Services)或者，您可以让应用程序在每次开始使用时请求权限。根据您的需要选择“从不”(Never )或“下次询问” 。(Ask Next Time)
6.关闭后台应用刷新
您的 iPad 会在后台刷新大多数打开的应用程序。这使您可以在多任务处理时以更少的延迟从中断的地方继续。但是，额外的活动最终会耗尽电池。此外，未优化的应用程序与后台刷新相结合可能会导致灾难。
转到设置(Settings )>常规(General )>后台应用程序刷新(Background App Refresh)，然后关闭任何导致电池快速耗尽的应用程序旁边的开关。
7.检查电池使用历史
如果您无法确定任何电池耗尽问题的根源，您可以使用 iPad 的电池(Battery)屏幕来解决这个问题。前往“设置”(Settings ) > “电池(Battery )”将其调出。
屏幕顶部显示一个图表，其中包含过去 24 小时和过去 10 天的电池使用统计数据。在底部，您可以看到该时间段内最耗电的应用程序。您还可以点击图表中的下降以显示最终耗尽电池的活动类型。
在确定一个资源密集型应用程序后，您可以执行以下操作：
- 更新应用程序。
- 强制退出并重新打开应用程序。
- 禁用应用程序的定位(Location) 服务(Services)。
- 关闭(Turn)应用程序的后台应用程序刷新(Background App Refresh)。
- 卸载并重新安装应用程序(Uninstall and reinstall the app)。
8.调低屏幕亮度
屏幕(Screen)亮度对 iPad 的电池寿命有巨大影响。如果您将其逐步增加，则预计电池会迅速开始下降。打开控制中心(Control Center)——从屏幕左上角向下滑动——并使用亮度(Brightness)滑块将其调低。
您的 iPad 还会根据环境光线水平自动调整屏幕亮度。如果它一直干扰手动调整，您可能需要禁用它。为此，请转到“设置”(Settings ) > “辅助功能(Accessibility )”并关闭“自动亮度(Auto-Brightness)”旁边的开关。
9. 降低妙控键盘亮度
您是否在 iPad Pro或 iPad Air旁边使用妙控键盘(Magic Keyboard)（带触控板） ？如果是这样，键盘的背光可能最终会耗尽电池电量。尝试调暗它。
转到设置(Settings )>常规(General )>键盘(Keyboard )>硬件键盘(Hardware Keyboard)，然后使用键盘亮度(Keyboard Brightness)滑块降低背光强度。
10. 切换到 Wi-Fi
如果您居住在蜂窝网络覆盖较差的区域，您的 iPad 最终将使用更多电量来建立连接。改用 Wi-Fi 可以帮助防止这种情况发生。
或者，您可以将 iPad 配置为在遇到不稳定的蜂窝信号时自动切换到Wi-Fi 。前往设置(Settings )>蜂窝网络并打开(Cellular )Wi-Fi 辅助(Wi-Fi Assist)旁边的开关。
11. 安静地发送通知
您是否定期收到大量通知？您的 iPad 屏幕将持续亮起并导致电池快速耗尽。你可以阻止它。下次您收到来自非必要应用程序的通知时，将其向右滑动，点击管理(Manage)，然后点击安静交付(Deliver Quietly)。
12. 从推送切换到获取
如果您经常收到大量电子邮件，请尝试从默认的Push配置切换到Fetch计划。这应该会阻止设备一直处理传入的电子邮件。
转到设置(Settings )>邮件(Mail )>帐户(Accounts )>获取新数据(Fetch New Data)。然后，禁用Push并选择一个Fetch计划——持续时间越长，电池寿命就越好。
13.重置所有设置
您可以通过重置它们来防止任何不正确或损坏的 iPad 系统设置导致电池耗尽。您不会丢失任何数据(You will not lose any data)，但之后您必须从头开始 设置 Wi-Fi 和蓝牙连接。(Bluetooth)
前往“设置”(Settings ) > “通用(General )” > “重置(Reset )” > “重置所有设置”(Reset All Settings )以重置 iPad 上的设置。
14. 从头开始设置 iPad
如果上述修复均无济于事，请考虑将 iPad 重置为出厂默认设置。这最终会删除 iPad 上的所有数据，但从空白开始可能会延长电池寿命。
您还可以选择在重置后恢复数据，因此请务必在开始之前create an iCloud or a Finder/iTunes backup。然后，转到设置(Settings )>常规(General )>重置(Reset )>删除所有内容和设置(Erase All Content and Settings)以启动重置。
15. 检查电池状况
您购买 iPad 有一段时间了吗？您可能需要检查电池是否有退化迹象。iMazing是一款适用于(iMazing)Mac和 PC的第三方实用程序，可以帮助您。
首先下载并安装 iMazing。然后，打开程序并通过USB连接您的 iPad 。选择iMazing 窗口右下角的电池图标以显示 iPad 的电池统计信息。(Battery )
最重要的数字是电池健康百分比和充电周期数。Apple将 iPad 的最佳电池寿命设定在 1,000 次充电周期以下。此外，理想情况下，健康百分比应高于 80%。
如果您的设备即将达到或已经超过这些数字，您必须更换电池(replace the battery)或升级到新 iPad。
15 Ways to Fix iPad Battery Drain Issues
The iPad is very reliable when it comes to bаttery life. Whethеr you’re browsing the internet in Sаfarі or binge-watching videos on Netflix, it guarantees up to 10 hours of screen-on time for most day-to-day tasks.
But, Apple’s tablet is not without battery drain issues. Rogue processes, unoptimized apps, and resource-intensive settings, among various other reasons, can cause it to use the battery faster than it normally does.
The tips that follow should help you fix battery drain issues on the iPad, the iPad Air, and the iPad Pro.
1. Force-Restart iPad
Sometimes, a rogue process can rapidly eat away at the battery on your iPad. If the battery indicator starts nosediving for no obvious reason, then that might very well be the case. A force restart can stop that.
Force-Restarting an iPad With a Physical Home Button
Hold down both the Top and Home buttons at the same time until you see the Apple logo on the screen.
Force-Restarting an iPad Without a Physical Home Button
Press and release the Volume Up button, press and release the Volume Down button, and then press and hold the Top button down until you see the Apple logo on the screen.
2. Update System Software
If you just upgraded to a newer version of iPadOS, you will initially experience less-than-stellar battery life due to spikes in background activity. It should improve gradually as you use the device, though.
Also, you must install new incremental system software updates since they almost always contain critical fixes for persistent battery-related issues. If automatic iPadOS updates are disabled on your iPad, head over to Settings > General > Software Update to install them manually.
3. Check for App Updates
Unoptimized apps can also cause rapid battery draining on the iPad. That is a huge problem during the early stages of any iPadOS release cycle since app developers often take time to update their apps to fall in line with the new system software.
So, it’s important to check for app updates regularly. Long-press the App Store icon on the Home screen and select Updates. If you see any new updates, tap Update All to install them.
4. Force-Quit and Re-Open App
If an app continues to drain the battery despite updating it (or if there are no new updates available), try force-quitting and reopening it.
Swipe up from the bottom of the screen and pause for a second to bring up the App Switcher. Then, drag the app to the top of the screen to force-quit it. Exit the App Switcher and re-open the app afterward.
5. Disable Location Services
Some apps and widgets on your iPad rely on Location Services to work properly. The Weather widget, for example, uses the functionality to display weather-related information relevant to your current location. But, Location Services can end up draining the battery quickly.
To put a stop to that, start by heading over to Settings > Privacy > Location Services. You can then disable Location Services for non-essential apps and services. Or, you can make apps request permission each time you start using them. Pick Never or Ask Next Time depending on what you want.
6. Turn Off Background App Refresh
Your iPad refreshes most open apps in the background. That allows you to pick up where you left off with fewer delays while multitasking. However, the extra activity can end up draining the battery. Also, unoptimized apps combined with background refreshing can be a recipe for disaster.
Head over to Settings > General > Background App Refresh and turn off the switches next to any apps that cause the battery to drain rapidly.
7. Check Battery Usage History
If you have trouble identifying the source of any battery draining issues, you can use the iPad’s Battery screen to figure that out. Head over to Settings > Battery to bring it up.
The top of the screen displays a graph with battery usage stats for the last 24 hours and the past 10 days. To the bottom, you can see the most power-intensive apps during the time period. You can also tap on dips within the chart to reveal the types of activity that ended up draining the battery.
After identifying a resource-hungry app, here are a few things that you can do:
- Update the app.
- Force-quit and re-open the app.
- Disable Location Services for the app.
- Turn off Background App Refresh for the app.
- Uninstall and reinstall the app.
8. Turn Down the Screen Brightness
Screen brightness has a huge impact on the iPad’s battery life. If you have it ramped way up, expect the battery to start tanking quickly. Open the Control Center—swipe down from the top-left of the screen—and use the Brightness slider to turn it down.
Your iPad will also adjust the screen brightness automatically based on ambient light levels. You may want to disable it if it keeps interfering with manual adjustments. To do that, head over to Settings > Accessibility and turn off the switch next to Auto-Brightness.
9. Lower Magic Keyboard Brightness
Do you use a Magic Keyboard (w/trackpad) alongside your iPad Pro or iPad Air? If so, the keyboard’s backlight can end up draining the battery. Try dimming it.
Head over to Settings > General > Keyboard > Hardware Keyboard and use the Keyboard Brightness slider to lower the backlight intensity.
10. Switch to Wi-Fi
If you live in an area with lousy cellular coverage, your iPad will end up using more power to establish connectivity. Using Wi-Fi instead can help prevent that.
Alternatively, you can configure your iPad to switch to Wi-Fi automatically whenever it experiences spotty cellular signals. Head over to Settings > Cellular and turn on the switch next to Wi-Fi Assist.
11. Deliver Notifications Quietly
Do you receive lots of notifications regularly? Your iPad’s screen will keep lighting up constantly and cause the battery to drain quickly. You can stop that. The next time you receive a notification from a non-essential app, swipe it to the right, tap Manage, and then tap Deliver Quietly.
12. Switch From Push to Fetch
If you get lots of emails regularly, try switching from the default Push configuration to a Fetch schedule. That should stop the device from dealing with incoming emails all the time.
Go to Settings > Mail > Accounts > Fetch New Data. Then, disable Push and pick a Fetch schedule—the longer the duration, the better it is for battery life.
13. Reset All Settings
You can prevent any improper or corrupt iPad system settings from inducing battery drain by resetting them. You will not lose any data, but you must set up your Wi-Fi and Bluetooth connections from scratch afterward.
Head over to Settings > General > Reset > Reset All Settings to reset the settings on your iPad.
14. Set Up iPad From Scratch
If none of the fixes above helped, consider resetting your iPad to its factory defaults. That will end up deleting all data on your iPad, but starting from a blank slate may improve battery life.
You can also choose to restore your data after the reset, so make sure to create an iCloud or a Finder/iTunes backup before you get started. Then, head over to Settings > General > Reset > Erase All Content and Settings to initiate the reset.
15. Check Battery Condition
Has it been a while since you bought your iPad? You may want to check the battery for signs of degradation. iMazing is a third-party utility for the Mac and PC that can help you with that.
Start by downloading and installing iMazing. Then, open the program and connect your iPad via USB. Select the Battery icon to the lower-right corner of the iMazing window to reveal the iPad’s battery stats.
The most important figures are the battery health percentage and the number of charge cycles. Apple puts the iPad’s optimal battery lifespan below 1,000 charge cycles. Also, the health percentage should ideally be above 80%.
If your device is about to hit—or has already exceeded—those numbers, you must either replace the battery or upgrade to a new iPad.
