Check that your power supply is working. Check for things that might prevent your Surface device or Windows from starting—or the battery from charging. Make sure that the connections are secure and that nothing is plugged in to the USB charging port on the power supply, if it has this feature.

Check cables and reset your power supply unit: Disconnect the charger from your Surface, unplug the power cable from the power outlet in the wall, and then disconnect any USB accessories. Wait at least 10 seconds.

How to charge Surface. USB-C and Fast Charging for Surface. What to do if your Surface power supply or charger doesn't work. Find out which power supply unit goes with your Surface device.

When the power supply is connected to your Surface and plugged into a power source, the LED indicator on the tip of the charging connector will be lit when your Surface is getting power. If the LED indicator isn’t lit, you may have a problem with your power supply.

If you connect a lower-voltage charger or a USB-A charger with a USB-A-to-USB-C cable, your device may charge slowly or not at all. It won’t use Fast Charging. Please connect a recommended charger instead.

To learn how to charge your battery to 100%, go to Smart charging on Surface. Review tips on caring for your Surface battery. Maximize the health and lifespan of the battery in your Surface device to get the most from it.

If you're using Surface Dock, unplug your Surface from it. Try to turn on your Surface—if that works, the accessory may be the problem. If that didn't work, connect the power supply that was designed for your Surface. When your Surface is plugged in, charge it for at least 15 minutes.

Check your device specs to see if it supports USB-C. USB-C adapters don’t have an on/off switch or LED lights to indicate power, errors, or functionality. If your adapter isn’t responding, remove it and restart your device, then try using the adapter again.

Surface Book 3 13.5” on base: Up to 15.5 hours of battery life based on typical Surface device usage. Testing conducted by Microsoft in April 2020 using preproduction software and preproduction configurations of Surface Book 3 13.5” Intel® Core™ i5, 256 GB, 8 GB RAM.

There’s a power charging port on the bottom center of the display. Just be sure to protect the screen with a padded case or some other sort of protection if you’re not bringing the keyboard along.