2011 Prius. Yellow triangle

Hey guys, I have a 2011 Prius and my yellow triangle is illuminated along with my check engine light and my traction control light. The check hybrid system warning is on as well. When I pulled the codes, I got a p0a80, p3011, p3013,and p 3014. Also, the arrows showing energy transfer from the wheels to the battery to the engine on the energy monitoring display have stopped moving. I do have diminished fuel mileage other than that, my car seems to be running OK.

Previously, my hybrid battery had died because the car sat for two years. I purchased a grid charger and charged the battery and the car has been running great for eight months now. I checked the 12 V battery and that is still in good shape. I also disconnected the 12 V battery for 30 minutes to reset the hybrid system. When I did that, the arrow started moving on the energy monitoring display again briefly. Then all the warning lights came back on and the arrow stopped moving. I plugged the hybrid battery back into the grid charger and charged it for about 15 hours. All of the bad battery cell codes went away, but the p0a80 code remained.

Is it time to change the hybrid battery? Any insight would be helpful. Thanks for your time