This article is about the mammal. For other uses, see Porcupine (disambiguation) . Porcupines are rodents with a coat of sharp spines, or quills, that protect against predators. The term covers two families of animals, the Old World porcupines and New World porcupines.
Quick Answer. A laptop computer typically uses 20 to 75 watts, depending on its size, make and model. The actual wattage should be listed on the laptop or instrument panel.
When I used Joulemeter's manual approach to estimate the energy consumed by two Windows 7 desktops and a Windows 8.1 laptop, the utility indicated that the desktops used about 75 watts an hour and the notebook about 25 watts an hour.