I recently owned a 2000 Prius 1st Gen with a damaged HV battery. It turned out that one cell almost exploded (the side of the battery melted). Obviously, corrosion and voltage distortion on the BMS caused the problem. I replaced that cell with one from a 3rd Gen Prius (all cells balanced, of course), and the battery works. However, I noticed that the other cells weren't very good either, so I started considering an alternative. I noticed that you can buy a complete Li-ion battery from a 5th Gen Toyota RAV4 for ridiculously cheap (at least in my country). Prices start at $300. I'm wondering if it would be possible to build a battery pack using these cells for a 1st Gen Prius. Theoretically, I would need 76 Li-ion cells, which would require buying two RAV4 batteries, but it's still much cheaper than replacing all the stock NIMH batteries. I wonder if this would even work.
You got to know the base voltage of rav 4 Prius is like 200 220 Dc volts . You should be able to Google the RAV4 I don't if that makes it plug in or
