The battery is working just
The battery is working just fine but I just had it replaced over a month ago.
I read a bunch of blogs and if you have the time and expertise then you can tinker with replacing the bad block. Logically speaking, it is likely other cells will follow to fail in the same battery so if I'd recommend buying a new one and installing it yourself to save about 1k that the dealer would charge for an hour's work. Make sure to ask for the warranty on the battery if you do the install. As mentioned, I went with Green Bean because of the life warranty and knowing that my Prius is not worth more than a new battery. Just wait your options and decide.