If it were me, I'd test what you have in the other thread first, to see if they're useful or not, despite probably not being the cells you actually ordered. If they turn out to be good enough, you're all set; if not, then I'd recommend buying only from places that others have recently bought from and reported genuine good results, in their specific battery build threads. (that will require a fair bit of reading around, unfortunately; I don't know of any single thread that has info on many sellers, along with specific results).