It seems to me, that this will be the right place for this post. I would just like to express my opinion about thing which surprised me a bit.
In my life I would not have expected, that any other Canon camera using the LP-E6N battery will beat my EOS 5DS (which I no longer have) in terms of reducing battery capacity.
I have two original batteries. When I placed my camera order at the end of the second half of May 2019, I immediately bought a spare battery. The one that was together with the camera in the box was produced in January 2018 and the latter in December 2018.
Recharge performance of a battery manufactured in January 2018 has decreased by one dash (of three available), and in a battery produced in December 2018 so far not at all.
I used and I use the camera for maybe 15 minutes in total every day at positive temperatures. I don't use stabilized lenses on a daily basis (currently I have only one lens of this type). The camera is turned off only when changing the lens and replacing the battery. I usually recharge batteries when their charge level drops to 19%.
With EOS 5DS I also had two original batteries, but they began to reducing their capacity after more than a year of daily use of the camera and not after less than seven months.