Battery life is an often vague and nebulous concept. In theory, it can be represented by a single number but, in practice, literally hundreds of factors can shorten or lengthen endurance. That’s frustrating if you’re trying to gauge the battery life and health of your notebook, especially if you’re trying to determine if it’s time to buy a new laptop.
Windows has a secret feature called Battery Report that can help. It’s what we use while testing notebook endurance at PCWorld. Here’s how to access Battery Report and understand what it reveals you about your laptop.