I have a Prius 2008. It has close to 115K miles. The car is showing red triangle on the dashboard and giving P0A80 code. Is it really the battery failure since it has such low miles? I used Dr. Prius free version and Hybrid Assistant apps and have attached their screenshots here. I am new to Prius so not sure if the whole battery needs to replaced or just some cells or is something else causing the battery to look like it has failed. If the battery needs to be replaced what is the best option and what kind of battery or cells or what seller offers the best quality batteries? I am totally lost. Some batteries are for $900 some are $3400. My vehicle is stalled it is overheating too when it runs so I am not driving it anymore. I have attached the screenshots for someone to help me understand if it is really the battery or something else. Note: I am also getting P0420 code but it has been going on and off for a while but I am not sure if it has anything to do with P0A80.
The number of miles driven is less important than time in service. Have you verified that the odometer is reading the true distance this car has travelled? Looking at your screenshots, I wouldn't be surprised if you found that the battery has been monkeyed with by someone prior to you acquiring it. Yes, your battery requires work or replacement. The best option is to replace it with a new OEM from Toyota. (I would do this if the car is in premium condition and you are 100% sure the mileage is genuine.) Everything else is a crap shoot. If you do not have the money, but have time, you could spend many weeks doing a refurbishment. Be prepared for a lot of study and trial and error. Block 3, which contains modules 5 and 6, is definitely very unhappy. One of the modules, if not both, needs to be replaced. There could be other modules you should replace as well. The P0420 could be because the car is not running well due to the bad battery.
