I seriously doubt that there is more than one component bad. Just my opinion, but if anyone wants to replace several components, they haven't a clue what they are doing. I suspect there is one cell bad in the pack. Sadly your biggest challenge will be finding someone that knows what they are doing! It could be that one of the computers or electronic components is bad, but that sort of thing does not usually repair itself. I would hang in there as long as the car runs fine. Meanwhile try to find someone that can do some real servicing other than replace half the car and hope that they stumble on the right solution.
Many years ago my father spent tons of money trying to repair an intermittent problem with his 65 Pontiac convertible. As a last resot he let me go at it, and I was glad to check it out as I needed to borrow the car from time to time. It turned out to be a corroded connector on the firewall. :roll:
Sorry to sound preachy, but it really pisses me off when I see people getting ripped off. A friend of mine just had his $10 distributer cap replaced for almost $1,000 U.S. dollars (including a tow and a rental car) :evil:
As I see it there are three possibilities. 1. The IMA computer went bad and that fried the batteries. 2. A cell went bad in the pack and that produced the other symptoms. 3. Your car got "struck by lightning" causing multiple electrical and electronic failures. Although possible, I really doubt the third case!
Wish I was nearby and could give you a hand for a day. I'm really sorry for what you are experiencing.