prius p0a80 and p3015

Catalytic converter got stolen and I let the car sit for 4 months. Replaced the catalytic converter and 12v battery.
After 10 minute ride to the car wash. All the lights on the dash lit up while getting washed. Hooked up a scanner and got p0a80 p3015 and p0420. Hybrid battery, weak cell5 and catalytic converter. Cleared the codes and drove it to work and code did not pop back up until I got in the car and turned it on.
had some time today and took the hybrid battery out. Located block 5. Mind you the car hasn’t been driven in 3 days. Both battery cells tested 7.89v. Was hoping one of the betteries were low…

 

Guess I will preform a load test and report back