Red Triangle, P0A80 & P3000

I got the red triangle on my 2006 Prius (mileage 223336). The battery on the energy display seems to be draining and refilling too quickly. I’m getting these codes: P0A80 & P3000

Does that mean I need to replace the hybrid battery? Could be an issue with the charging system rather than the battery itself?

I don’t think it’s the 12 volt because I got replaced it last year. Same with the inverter water pump.

It’s running fine otherwise, no problem accelerating though I haven’t driven it above 30mph or longer than 10 minutes after getting that warning.