It's weird no one seems to be mentioning a major problem with mordern Intel CPUs: Turbo boost. On newer laptops I always turn gimmick off now. Half the time the safeties don't kick in and you end up with 100+ degree C on your CPU for sustained amount of time (especially compiling!). Keep that happening over a couple of years I would not be surprised if that contributed heavily on battery stress and the shortening of the product... *cough* Apple "80°C+ idling is totally normal" *cough* (Actual reply from Apple when I queries about my McToasty 2015!)
Anyone else noticed this issue?