kahjot wrote:
I bought a replacement battery for my 2011 MacBook Pro from OWC (macsales.com). It’s an easy swap. You can find how-to videos on the OWC site. I don’t see why replacing a failing battery should be any more problematic than replacing the hard drive or the RAM.
I wouldn't say it's more or less problematic about replacing those things. However, this is one of the things where Apple seems to draw a line in the sand where they're saying "don't do it". 2.5" SATA and PC3-12800 SODIMMs are industry standards, and the whole idea around using them is interchangeability, the ability for computer manufacturers to buy commodity parts, and for the user to install commodity parts. The battery however is a proprietary, and the standards (that's 1000 charge-discharge cycle rating) may be higher for Apple OEM parts than for generic. I'm not too worried about the difference between "tier 1" SODIMMs from Micron, Samsung, Hynix, or Nanya. Even most aftermarket DIMMs using custom boards or chips that hide their source are generally pretty good these days. If it works, it works. Compliant memory isn't likely to work differently than any other compliant memory.
Apple also provides instructions for replacing RAM:
https://support.apple.com/en-us/HT201165
Of course once Apple stops stocking A1322 replacement batteries at the end of their support cycle, what choice do have other than aftermarket? At least with the mid-2012 MBP it's an easy replacement.