"All generalities are false!"
It seems battery technology changes faster than we can. When I used Ni-Cads in RC flying, the trick was to never leave them with a low charge for very long. And never leave them with a full charge for very long. And never leave them with any particular charge for very long. Other than that, you could do anything you wanted.
That was called battery "memory."
Newer types seem to have lost any memory and that's supposed to be good. OTOH, it appears that some managed to retain more brain cells than at first thought!
Maybe it's part of the 'exercise is good for you' fad(!) that leads some to report that 'exercising' the battery is good for them, also.
I suspect that most of us just don't worry about how we charge these things. I try to remember to let Judy's MBP run to shut down every couple of months. But I'm not sure it really matters. Although I think Apple suggests doing something like that, also.
IMHO, batteries are part magic. They would usually tell you how much power is really available. Many devices will claim to tell you but I don't think the batteries pay much attention to those reports. It seems that batteries know when their use is critical and no replacements nor charging capabilities are available. And then...
But your quote includes the additional condition that is not good for any kind of electronic device, "
elevated temperatures." Laptops are especially prone to this condition because of compact interiors and often not very heat conductive surfaces supporting them (or even covering them!). My only solution has been to spend ten bucks for a laptop cooling device. It has two USB fans and the four legs fold into its body for making it very easy to pack in the laptop bag. Luckily, I bought two of them. The first one started throwing fan blades causing vibration and slowing that fan until it was basically useless.
