The company estimated "up to" 10-12 hours of battery life for the previous "Early 2015" 13-Inch MacBook Pro models (10 hours in wireless web and 12 hours in iTunes movie playback) and "up to" 9 hours of battery life in both wireless web and iTunes movie playback for the previous "Mid-2015" 15-Inch MacBook Pro models. I'll give you the TL;DR version of what you could've found by searching: 9 hours is achievable if your usage ressembles Apple's testing method, which is explained in the fine print on Apple.com. I recently bought a MacBook Pro, and I installed Windows 8.1 with bootcamp on it. However, the battery life is absolutely horrible. I get about 2 hours of battery life doing light tasks that would get me 8-9 hours of battery life on OS X. Task manager shows minimal CPU usage, like <5% most of the time. The laptop also runs extremely hot. The laptop is equipped with 2 Thunderbolt ports and Bluetooth for easy connectivity. Other features include a storage space of 512 GB, built-in stereo speakers, two microphones, and a Facetime HD web camera. 2015 MacBook Pro offers up to 10 hours of battery life, depending on your usage. Wireless web testing conducted by Apple in February 2011 using preproduction 2.7GHz dual-core Intel Core i7–based 13-inch MacBook Pro units. The wireless web test measures battery life by wirelessly browsing 25 popular websites with display brightness set to 50%. Battery life varies by use and configuration. The 13-inch MacBook Pro comes in AU$1399 and AU$1698 configurations, with 2.3GHz Core i5 and 2.7GHz Core i7 dual-core CPUs, respectively. Our high-end AU$1698 Pro comes with a 500GB hard drive and Apple's 14-inch and 16-inch MacBook Pros offer phenomenal battery life, especially against the competition. Battery life (hours:mins) MacBook Pro 14-inch M1 Pro: 14:08: MacBook Pro 16-inch M1 Max: Comprehensive review of the Apple MacBook Pro 15 Early 2011 (Intel Core i7-2635QM, AMD Radeon HD 6490M, matte hi-res screen, 15.4", 2.446 kg) with numerous measurements, benchmarks, and ratings The "Late 2016" MacBook Pro models also effectively have the same performance and inferior battery life compared to the "Early 2015" line that they replaced. In the long-term, USB-C/Thunderbolt 3 no doubt will be more convenient, but at the time these systems were first released, it was a bit of a pain to use a bunch of adapters to connect The MacBook Pro is equipped with a non-removable (at the risk of voiding the warranty) 63.5 Wh battery that profits from the low power consumption in Mac OS X. This ranges from 6.6 to 56.4 watts 4LfD.