[slavik81]

The iFixit guide for battery replacement on the mid-2015 MBP [1] is a 74 step process involving the use of a nasty chemical solvent to remove the glue that holds the battery. You must have found some enormous shortcuts to have replaced your battery in 15 minutes!

I'm quite comfortable opening most electronics, but my MBP is one of the few I would hire a professional to handle.

[1]: https://www.ifixit.com/Guide/MacBook+Pro+15-Inch+Retina+Disp...

[richthegeek]

The late 2015 model is, relative to the mid-2015, much simpler. Only removing a few ribbon cables and prying the old battery out (heat and fishing wire works ok, I didn't need solvent).

It was more like 30 minutes for me, but maybe if I need to do it again it'll be quicker.

All this was neccesary because I'm in Poland which doesn't have 1st-party Apple stores and none of the AASP would touch it.