Great guide. Battery came out smoothly and new battery installed without issue. However, the battery I purchased here only lasted 3 months. I completed all the recommended steps to reset SMC and NVRAM but the battery now only lasts 10 minutes off the charger. Thankfully I kept my original battery and placed it back in the MBP and I’m now attempting to return the battery despite being out of the 30 day return period.

literally took me 10 minutes, I opted not to disconnect the lcd ribbon and just held at an angle, battery took a little prying with the spudger but came off fine, only issue I ran into was that I did not seat the top of the screen first when placing back together, this meant I had to repry the screen back off to seat properly, then the bottom met some resistance and I gave a gentle nudge to the bottom screw brackets and it seated perfectly