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I recently was forced to upgrade by 2015 laptop at work because the battery life was finally short enough that I couldn't stand it. I hate dongles. The 2015 Macbook will stand as their last best laptop. Nothing about the 2018 laptop is better, it's only worse. I don't understand why they don't see this. There should really be a huge multi-billion dollar class action lawsuit for their keyboards and fixability to wake…
Just spent $200 on new battery and install for my 2015 MBP. I wish I'd opted for the 1t model vs 512g drive, but was getting refurb and at the time they had no 1t left - wasn't sure they'd have any more (friend of mine snagged one a few weeks later!)
Hi there. You can buy a sintech adapter on amazon that will let you put a standard NVME SSD into a macbook air/retina 2013-2015 model (and maybe some others).
It costs about $20.
With that, you can choose some of the cheap, new, fast, 2TB disks and get a massive improvement in speed and storage capacity for relatively little money. Google around; there are some recommended drives.
From what I've read the 'long' version of the sintech is the best one to buy. The upgrade process is on ifixit; it's super easy. You will also need a torx screwdriver; again you can buy a 'mac fixing kit' for $5-10 on amazon etc.