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<\/a>\nWindows 10 is currently a technical preview that includes monitoring of your usage of the OS.\u00a0Any outcome of a battery test will probably be polluted by the amount of code execution that collects telemetry data in Windows 10 at this point, which might be code that’s not even optimized for low power consumption.<\/p>\n
Windows 10 Laptop Battery Life Is Better<\/h3>\n
Our battery experts have been measuring laptop battery life across four different Windows laptops: two versions of the superlative Dell XPS 13, one excellent HP Spectre x360, and Lenovo ThinkPad X240. This entire week, I\u2019ve been running hp 2230s battery life<\/a>\u00a0tests almost every night, along with real-world tests during the day, to figure out how long they last. We tested Windows 8.1 against Windows 10.<\/p>\n The reason we\u2019ve had to do it almost every night is that the numbers haven\u2019t been consistent. One day, a Windows 10 laptop would give me one number. The next, two hours less.<\/p>\n Windows 10 silently updates itself in the background, and there\u2019s next to nothing you can do about it. And when it\u2019s updating, I think it\u2019s warming up the processor, which drains the battery power more quickly. \u00a0How much more quickly? Well, HP Spectre x360 got 6.5 hours of battery life on Windows 8.1. One night, it only managed 5.5 hours on the exact same test. That\u2019s a huge dip!<\/p>\n But the next night, after I let the laptop stay on all day, it managed 7.5 hours. A whole extra hour!\u00a0The high-res 3200 x 1800 Dell XPS 13 didn\u2019t see a big gain, though. More like breaking even. On Windows 8.1, it managed about 5 hours, and I got about 5 hours with Windows 10.<\/p>\n