Luckily, the process is relatively painless. However, this type of tool isn't common, so you must take things into your own hands. Likewise, some laptop manufacturers will include a calibration tool within Windows 10 in order to easily take care of the problem. This all depends on the laptop and manufacturer, so don't be alarmed if you can't find it. If you're comfortable accessing your PC's BIOS, you might find a battery calibration tool within.
How to calibrate the battery in your laptop After calibration, you'll usually get a more accurate reading, and while it may be depressing to see that your old laptop is only getting about an hour of power from a charge, you won't be stuck somewhere with a dead device. For example, it might say that there are two hours of juice left, but after 45 minutes you'll get a warning that it's about to shut down. Calibration isn't for the dead battery sitting in storage it's for a battery that still works properly, yet doesn't show an accurate reading when it comes to life remaining.
As you use your Windows 10 laptop, the battery goes through a number of charges and discharge cycles that slowly wear it down.
