The problems that you refer to on FD3 IMA battery was on models shipped from 2006-2008 (Honda says approximately 1% of the production had this issue). 2009+ models do not have this, and as for the models with this issue, Honda released a software update. But what people say is that with the software update, fuel efficiency goes down. But if you are getting a FD3 which was manufactured after 2009, you should be safe.