Display. Retina display: 13.3-inch (diagonal) LED-backlit display with IPS technology. 2560-by-1600 native resolution at 227 pixels per inch with support for millions of colors. Scaled resolutions: 1680 by 1050, 1440 by 900, and 1024 by 640 pixels. i just need the info on the original battery capacity when the model was new.:) Not sure where you are going to locate that information: MacBook Pro (Retina, 13-inch, Early 2015) - Apple Support. You can look at replacement batteries— Battery Replacement 13-Inch MacBook Pro (2013 - 2015) - OWC Since i upgraded version 11.1 battery draining fast I have MacBook Pro (13-inch, 2018, Four Thunderbolt 3 Ports). Since i upgraded version 11.1, why does the battery drain even so fast when not in use? The MacBook Pro is a svelte, beautiful machine, available in silver or “space grey” aluminium. At 1.37kg it’s about 80g heavier than Dell’s touch-screen XPS 13, but about 160g lighter than Apple MacBook Pro 13: Apple MacBook Pro 14: Dimensions: 0.6 x 12 x 8.4 inches: As said, the M2 MacBook Pro features a 58.2-watt-hour battery, and the 14-inch MacBook Pro has a 69.6-watt-hour 13-inch MacBook Pro 2015 – Battery Life. 74.9 Watt-hour battery, Up to 10 hours web browsing, 12 hours of video (claimed) The battery capacity of the MacBook Pro is the same as I have a 2014 MacBook Air here running Big Sur 11.1 and I keep it on the charger most of the time, as otherwise, it too results in about a 4.5 to 5 hour battery run. battery capacity significantly reduced on macbook after installihng big sur 11.1. Anyone found anyway to fix this. MacBook Pro (Retina, 13-inch, Early 2015) MacBook Pro (Retina, 13-inch, Mid 2014) EXmeNX.