P0A80 replace battery pack vs P0A80 Battery ECU error

I'm new user,
Best Regards from Poland
I can't find answers for my questions
Question is about AurisII but I think is the same as Prius3.
It have NI-MH battery.
Hello I have a question about the P0A80 error because I found two descriptions of this error on the internet.
1. Replace battery pack
2. Battery ECU error.
I'm writing from memory, so maybe not exactly like that, but you know what I mean. I'm digging into the topic because something doesn't suit me. I found information that it is a problem with the cells and I don't know if the same problem has been edited differently in different models/years, or if they are two different problems. Now it occurred to me that various applications can also have an impact. Dr. Prius points out problems with specific cells, but after replacing them with newer ones and changing the order of all cells, the problem is still with 3 and 12 or 12 and 13. Is it possible that the battery controller is dead and crashes after about 200km of driving? I unfasten the clamp and continue riding. I know that the battery is also weak, but the previous owner has already replaced the cells and I think he gave up because of it. The CarScanner app does not see the error at all. Thank you.

 

I can't add a link

 

Thanks, that's important news

 

Those reports are in Polish but I think its understandable.

 

Thank you, colleagues, for your help. I already know that this battery needs to be replaced, but... Can someone explain to me how it works, that after swapping the cells, DrPrius shows the problem all the time in the same places? If the application shows a broken block, e.g. no. 3, then after replacing it with number 5 it should show a problem with number 5. Why is there a problem with the same places all the time after changing the order???????

I use the Hybrid Asistant on a daily basis. Today I compared, for example, the percentage of charge. I'm posting screenshots from this morning. I see huge differences.
The car did 300km, after about 50km when going downhill it braked with the engine, I thought that the HV system error would pop up again. I stopped, turned it off and on again, I didn't disconnect the battery. Only restart. The next 250km without problems. Fuel consumption on the screen 4.3L. Driving around the city without traffic jams.

 

I've taken the battery out and rearranged the cells twice already, I've balanced by connecting all the + and - with a cable. During assembly, the voltage was identical on all modules. In order to remove errors, I unplugged the battery clamp. (I haven't driven it recently so it was unplugged for two days, After that I did 600km without a problem, yesterday again HV system error) I found a thread about removing current from capacitors. Shorting the wires from the Aku 12v was supposed to help with this. Yesterday, after the error occurred, I used this method. After turning on the car, even before the combustion engine started, Dr. Prius displayed P0A80. Maybe auris requires the use of some demanding interface or software like techsteam. No other android app shows the error. Only Dr. Prius sees it.
I'm thinking about replacing the battery controller itself because it looks like it can't be removed from the error or it's damaged. When driving with the seat off, you hear a squeak similar to charging a flash on a camera when accelerating. I once had a PC motherboard that squealed so much because of worn capacitors. I need a few more days to collect money for the service and during this time I try to fix it myself. I'm just inquisitive. The battery is worn out because it is old, but in my opinion something else is out of order.
I'm thinking about replacing the battery controller itself because it looks like it can't be removed from the error or it's damaged. When driving with the seat off, you hear a squeak similar to charging a flash on a camera when accelerating. I once had a PC motherboard that squealed so much because of worn capacitors. I need a few more days to collect money for the service and during this time I try to fix it myself. I'm just inquisitive. The battery is worn out because it is old, but in my opinion something else is out of order. I'm pretty sure it doesn't clear the error from the battery controller. Now I found on a Polish forum that someone was disconnecting the 12v battery and pressing the brake for 3 minutes. This is some kind of "hocuspocus" but I'm going to check it out.

hope dies last.

EDIT
Unfortunately, the same thing is still the same. After a few hours with the battery disconnected and the brake depressed, the drPrius still sees the P0A80. Even without turning it on READY. Then I checked the battery through hybrid assistant. (battery test). At first, it was even and high. A moment later, the chart diverged and then evened out again Wth??????? In the winter I had a problem with the 12v battery. It discharged and I charged the charger Now I check every time. Every time I plug it in, the meter shows from 12.4 to 12.9v Can it still be damaged and cause such problems?

 

I expect that if I pour the old oil out of the engine and pour it into another engine, and I pour clean oil into my engine, then after such an operation there will be clean oil in my engine and dirty oil will be in this other.
Why other apps don't see this error at all. Why can a car do 500 km around the city without any problems? I edited my previous post. Please take a look at the screenshots from HA. Thank you.

edit
In addition, when the problem appeared, I immediately bought 3 pairs of batteries, used, in good condition, checked, I balanced everything and the problem is still in positions 3, 12 and 13.