Yes, it's fine to do that for battery maintenance when they aren't currently being used.
Some people like to keep their batteries ready to fly at any time, so they get into the habit of fully charging the same ones every couple of days without...
I got an average of 4 batteries for each of my drones unless different models can share batteries. I can still get about 15-20 minutes flight time out of my 9 year old OG Mavic Pro batteries. I never thought they would last this long, but with...
Three for each drone, cycled religiously (OCD) 😁
Recently retired batt #1&2 for both Mavic 2's after 6 years of use - road-testing the decent quality 3rd party non-OEM replacements... so far: so good.