Sonofnun777

Greetings everyone. I had a hv pack go out on my gen2 2005 toyota prius go out months ago. I installed the new pack/cell just one #12. And now either this one or another one has gone bad!:mad::( I will hopefully verify today if i make it home. I had it checked and the only code that came up was P0A80 same as last time. My question: This time the fan is running loudly in the back, accelleration sluggish, could it be something else instead of the hv battery? And would it be better to replace the whole thing for i do not want to be changing out a pack every 5 months or so? I am open to suggestions and thank you for any advise. Joshua