I am pretty sure the current batteries of today should be capable of just placing on the charger when done each use.
According to the Dewalt manual: "You may charge a partially used pack whenever you desire with no adverse effect on the battery pack."I'm sure there are two schools of thought. One is to fully drain and the other is to recharge when you want. I have done both, but haven't had any issues with the batteries.
This has been my experience with the Greenworks 80V batteries as well.