Is your Windows 10 laptop or tablet battery draining faster than usual? Would you like to know the current battery capacity relative to when it was new? Here is an easy to way to know the current battery capacity of your Windows 10 device without using third-party utilities. Laptop and tablet batteries, just like other rechargeable batteries, become less effective as they age. Their capacity and performance eventually decline. The amount of charge that they can hold reduces with time. This is the primary reason why we don’t get good battery backup when using an old device. When you are not getting enough battery backup on your Windows 10 device, you might want to check the current battery capacity so that you can replace the battery if the battery cannot hold at least 50% of its original capacity. There are plenty of third-party utilities around to determine the original and current capacity of batteries. Fortunately, Windows 10 also includes a built-in tool which gives you this information as well as additional information about your device’s battery and its usage. Know the current capacity of battery in Windows 10 Complete the given below directions to know the current storage capacity of your Windows 10 laptop or tablet battery. Step 1: Open the Command Prompt with administrator rights. To do that, type CMD in the Start/taskbar search field, right-click on the Command Prompt entry and then click Run as administrator. Click Yes button upon getting the User Account Control prompt. Step 2: At the Command Prompt window, type the following command: powercfg /batteryreport Hit the Enter key to execute the command. Step 3: When you execute the above command, Windows 10 creates and saves a battery report to C:WindowsSystem32 folder. Step 4: Navigate to C:Windowssystem32 folder and open the battery-report.html file. It can be opened with any web browser. Step 5: In the battery report, in the Installed batteries section, you can find both the design capacity as well as the full charge capacity of the battery (batteries). The design capacity represents the amount of charge the battery was originally designed to hold. The full charge capacity is nothing but the current storage capacity of the battery. If you scroll down the page, you will see a section called Battery capacity history. The table shows how your battery’s storage capacity has declined over time. The full charge capacity of the battery will be close to the design capacity when its new. The full charge capacity drops with time. When the full charge capacity of the battery drops to less than 50% of the design capacity, you might want to consider replacing the battery. We also suggest you read our how to turn on the built-in battery saver mode in Windows 10 to increase the battery backup time.