Unfortunately, we don't have the info on that one, @Murphydakoda!
If you give it a go, do let us know on here! Might help some others.
Welcome to the Community! :smileyhappy:
I found it takes about 30-40 minutes to charge the buds themselves with the case near full charge, however I didnt see if it was the same or less with only 1 charging (with the buds at 20% and 10% respectively at start)