[indemnity]

I still have a 2013 rMBP going strong, battery at 90% of original capacity... what are your charge cycle counts like?

[paulsmal]

2015 rMBP, capacity: 80.4086%. Don't know how to get info about cycles in Linux

[KozmoNau7]

Install TLP (http://linrunner.de/en/tlp/docs/tlp-linux-advanced-power-man...), which you really should anyway for better battery life, and run 'sudo tlp -b'.