Me too, same car. I was able to keep it limping along for a while with grid charges and discharges but lately the IMA comes back on a day or two after any sort of battery treatment. So I have given up on such things. On the plus side Honda finally got the parts in to replace the two recalled airbags and the recalled light stalk switch. Whoopee, now it is a safer failing car. While it was in for that I had the dealer change the expensive oil and the expensive CVT fluid, which they now say should be changed every 15K miles, which reminded me once again that Honda somehow managed to be build a car that gets good gas mileage and yet is neither reliable (1 failed CVT, 2 failed IMA packs at about 120K miles) nor cheap to drive (preceding plus costly fluids for maintenance.)I have a civic imi 2003 and the hybrid pack has got to the stage where it has finally failed.
I'm really not hot to spend ~2K$ on a 3rd IMA, although one from a vendor other than Honda might work better. Or not. It is really hot here, and batteries just do not like those sorts of temperatures. Plus I have no reason to think the CVT will hold up, as one has already failed.
Probably I should just get a Prius and be done with it. I wouldn't even hesitate it it was just the mechanics of the car, but I really do not like driving a Prius. That invisible front end is really tough for me when parking. (Depth perception issues, it helps to be able to see some part of the front of the car.)