If you are trying Windows 10 Insider builds on your laptop, you might have noticed a slight drop in battery life. This is a known issue and Intel today confirmed that they are working with Microsoft to fix it. The upcoming driver update will fix this and battery life will be nearly same as on Windows 8.1 devices.
“Intel and Microsoft are working to optimize drivers for battery performance on Windows 10 across Intel platforms,” an Intel spokesman said in an email. “While we are working on technical optimizations, we have seen very minor hits to battery life but even the upper end of what we have seen is below 10 percent. Do know that we expect battery life on Windows 10 systems to be nearly the same as on Windows 8.1 systems once the final Windows 10 drivers have been updated and released.”