Best options for hybrid battery replacement

My prius is showing the red triangle with code p3020. Im wondering what the best option for replacing the battery is in terms if getting the most bang for my buck. I know the cheapest option would be to just swap the bad cells, but im worried about the long term viability of that. G1 prius modules are only getting more expensive over time and it seems like swapping modules is more of a “band aid” solution and I’m looking for the best long term way to solve the issue. Where is the best place to buy a g1 prius battery? Needs to ship to Hawaii, and I’m looking for a good quality battery that can withstand the heat here. I’ve also seen people on these threads talking about reconstructing the battery with 38 gen 2 prius modules. I know that’s about the same price as buying a new battery anyway, but my question is if thats worth it for the improved mpg over a g1 battery. Also, I’ve never worked on a hybrid battery and I wasn’t able to find any photo guides or videos of anyone doing this specific reconstruction with the g1 battery so I’m worried I wouldn’t be able to pull it off considering it seems to be more labor intensive then just replacing the battery. To anyone who’s done this- is there any way a beginner could pull it off? Any tips on how to do it? Is the extra life that you get from g2 modules worth it? All advice is appreciated !!

 

thanks for all the help! I actually got a more advanced reader to look at the car with and found out that the battery is fine and running at 80% efficiency. Not sure why it was throwing that code and the triangle still came up after I cleared it but i feel like the battery is definitely fine. the car still gets good mpg and everything so I’m not sure what made it throw that code.