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Smart charging is a feature that helps protect your Surface battery against conditions that may accelerate battery deterioration or lead to expansion. It's always active and engages automatically when it detects your device is plugged in for prolonged periods or used at elevated temperatures.

When smart charging is turned on, your battery discharges and limits its maximum charge to 80%. A heart icon will appear over the battery icon in the system tray to let you know smart charging has been activated. You might notice reduced battery life as a result.

When you discharge your battery below 20% or more on battery power, it will automatically pause smart charging and allow your device to charge to 100%. When you need to manually pause smart charging, you can pause it in the Surface app and fully charge your battery. If your Surface isn't at risk, smart charging will turn off based on your battery use patterns. 

When to pause smart charging

Smart charging is always active on your Surface. When it’s engaged, it’s recommended to keep it turned on. Here are some instances when you might want to pause smart charging in advance:

  • While traveling, like on a long-haul flight

  • When attending long meetings

  • Going to a coffee shop or restaurant

  • Any time you think you may need to use your battery’s full charge and an outlet may not be available

Note: Only some Surface devices can pause smart charging. To see compatible devices, go to Caring for your Surface battery.

How to pause smart charging

Here's how to pause smart charging: 

  1. Select Start and open the Surface app. If you can't find it on your Surface, you might need to install it from the Microsoft Store. Get the Surface app

  2. When the app is open, select Smart charging > Pause.

Smart charging will be paused until your Surface needs to turn in on again. You can now charge your battery to 100%. It can take approximately one hour to fully charge your Surface.

Note: Pausing smart charging is temporary. It will turn on again when your Surface determines it's needed. Pause it several hours before you need your full battery and charge your Surface during this time. If you pause smart charging much sooner than it's needed, it may turn on again.

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