It should come as no surprise that battery life is one of the key things we look for in a laptop computer. What is surprising is which laptop brands and models take the top spots when it comes to battery life. They're not always the usual suspects.

Why are we so obsessed with battery life? More than screen size, processing power, graphics card or number of ports, battery capacity is the first thing many of us think about before making a purchase, whether it's a school laptop, business laptop or gaming laptop. After all, you don't want your PC shutting down in the middle of a Netflix binge or while taking notes in a long lecture class, and carrying around a battery backup is just a hassle.