You asked this twice. If you can't find your posts - click your profile and you should be able to get links to them there. There are answers on the other copy too.
I never payed attention to charging rules. Several people have said they don't need that 8 hours then use an hour then charge again stuff. Some non-Riva
batteries I bought came 1/2 charged and I used one right out of the box while charging the other.
But it's up to you. I guess there's a chance doing so will make that battery not charge as well. If so, you could
buy another battery and keep that one as an emergency spare.