Buy Replacement Battery for MacBook Pro A1398 (Late 2013, Mid 2014, Mid 2015 Version), Apply to MacBook Pro 15 inch Retina Late 2013,Mid 2014 and Mid 2015 - TECHOWL A1494 A1618 Battery
Apple MacBook Pro with Retina Display (15-inch, 2014) review: Still the best higher-res laptop, but the competition is catching up - CNET
Apple MacBook Pro 15-inch (2013) Review | PCMag
What is the "real-world" battery life of the "Late 2013" and "Mid-2014" 13-Inch and 15-Inch Retina Display MacBook Pro? How does the battery life compare to earlier models? - Techable
Review: Apple's mid-2014 13-inch MacBook Pro with Retina display | AppleInsider
MacBook Pro (Retina, 15-inch, Mid 2014) - Technical Specifications
How Long Does Your MacBook Pro Battery Last? | OSXDaily
MacBook Pro 13 mid 2014. It turns 5 years but still works like the very first day. The battery still last 8 hours, awesome screen, fast performance for daily tasks and Photoshop
My MacBook Pro needed a battery replacement | Ctrl blog
How To Test A MacBook Battery To See If It Needs Replacing And Replace It | Macworld
Review: Apple's mid-2014 15-inch MacBook Pro with Retina display | AppleInsider
MacBook Air 13" Early 2014 Battery Replacement - iFixit Repair Guide
New model, two-year-old processor: The 2015 15-inch Retina MacBook Pro reviewed | Ars Technica