I did know that it's not good for the life of a battery to continuously deep discharge it. (Though I've seen so much different advice over the years about various battery technologies that someone might easily think it was better for batteries to run them down now and then, a belief that had at least some relevance to NiCads.)
However, I confess to not knowing that running down, say, a laptop and then letting it sit uncharged for a long period was a very bad thing.
I did know that it's not good for the life of a battery to continuously deep discharge it. (Though I've seen so much different advice over the years about various battery technologies that someone might easily think it was better for batteries to run them down now and then, a belief that had at least some relevance to NiCads.)
However, I confess to not knowing that running down, say, a laptop and then letting it sit uncharged for a long period was a very bad thing.