I usually agree with your answers, but not this one. I have seen many recommendations on how to maintain your battery's capacity, but I've never seen anyone say to keep it fully charged. In fact, my Surface 3 at the moment, which is almost always docked because of the small screen size, is set on Microsoft's Kiosk Mode, which doesn't let the battery fully charge. It keeps it at about 20-50 percent at all times when plugged in.
Here's an example of what many other articles say -
4 Simple Tips to Keep Your Laptop Battery Healthy — Omega Computer Services (ocs.help)
I do agree with the part that letting it get too low will affect its capacity.
In other words, keep it more or less in the middle. Not too high, not too low.
@Kesake , to answer your question: If Conservative Mode does in fact mean Battery Saver mode, then no, it does not harm your battery. On the contrary, it helps prevent battery capacity loss because it results in less charge cycles due to using less power.