Surface Diagnostic Toolkit: Check Surface Battery Information

Surface Diagnostic Toolkit is an exclusive tool to guide you through software repairs and hardware diagnostics to quickly and efficiently uncover and resolve issues you are experiencing on your supported Surface devices. On top of that, it also lets you look up information about your device, repair common software issues, and validate your Surface hardware.

Today we will show you how to use the Surface Diagnostic Toolkit (SDT) to check your Surface’s battery health information, including your Surface power state, battery wear, designed capacity, current capacity, battery cycles, current charge, battery capacity readings history for individual battery in one summary report.

Supported Surface devices

The Surface diagnostic toolkit works on all recent devices, starting from Surface 3, which has Surface UEFI. That includes:

Downloading the Surface diagnostic toolkit

The Surface Diagnostic Toolkit is a free tool from Microsoft hosted on the Microsoft Store. To get it:

  1. Download Surface Diagnostic Toolkit from Microsoft Store here.
  2. Or go to the Microsoft Store.
  3. In the Search box, type Surface Diagnostic Toolkit.
  4. Click “Free” or “Install” to install the app on your device.
    Download Surface Diagnostic Toolkit

How to Check Surface Battery Health

When the app is installed. To check your Surface battery health information:

  1. Launch the Surface Diagnostic Toolkit.
    Open Surface Diagnostic Toolkit
  2. Under the hamburger menu, select Battery Information.
    Surface Diagnostic Toolkit: Battery Information Menu
  3. Your Surface battery information will be shown below.
    Surface Diagnostic Toolkit: Battery Information


Check the following frequently asked questions that will answer questions you might have.

Question 1

What battery cycles are shown in the Microsoft Surface Diagnostic Toolkit?

According to Microsoft, when a battery has been charged and discharged, it counts as one cycle.

For example, if the battery runs down to 60% and is charged to 80%, it doesn’t count as a cycle. It is a cycle if the battery runs below 10% and is charged more than 90%.

Question 2

What is the difference between the designed and current battery capacity?


The designed battery capacity is the total energy storage measured in watt-hours (WH) or amp-hours (AH) that the battery was designed to have by the manufacturer. You can find the complete list of Microsoft Surface-designed battery capacities here.

The current battery capacity is the energy storage reported by the battery’s built-in control circuit inside your Surface. The battery is a consumable component that will lose its capacity over time. So, the current capacity is expected to be less than the designed capacity.