Recently the battery on my Macbook Pro (Retina, 13 inches, Early 2015) has been flagged by the menu bar as 'Condition: Replace Now', and according to coconutBattery it now only has about 44% of its original design capacity, after just over 1000 cycles. Now this wouldn't normally bother me as I've had many Windows laptops with degraded batteries, but apparently Macbooks automatically get throttled if the battery becomes too degraded (according to this topic for example, https://discussions.apple.com/thread/4468165). However, most of the people who have had this issue seem to have much older laptops, like 2011-2013, with removable batteries. So I am wondering: 1. Does my Macbook, which is more recent (Retina, 13 inches, Early 2015, Model Identifier MacBookPro12,1 under System Information), and doesn't have a removable battery, still have this problem of slowing down once the battery becomes bad enough? If so, is there a software fix for it like there was in the thread I linked above (the solution is by Dhalgren in the same thread https://discussions.apple.com/thread/4468165?answerId=22391760022#22391760022I I tried doing it but the file under System/Library/Extensions/IOPlatformPluginFamily.kext seems absent on my system, as there is no 'MacbookPro12_1.plist', the latest version being 'MacbookPro8_3.plist'). 2. Will the Macbook slow down if I boot into Windows instead via Bootcamp? The above thread seems to suggest the slow down is something Apple forces via software to 'protect' the Macbook so surely booting into Windows would circumvent this? Many thanks.