I recently bought an electric Civic. It has batteries from a Leaf and a Kostov motor. It was on the road for years but lost some parts to other builds. It came with a Zilla controller with the hairball interface. Installation of that looks reasonably straightforward. But it has no charger. Afaik the batteries are set up as 330v right now. First thing I'm going to do is take all the batteries out and inspect them, clean the boxes etc. But then I will have to figure out how to charge them. I have experience with lead acid batteries but not much with lithium ion. I have read into BMS and the importance of cell balancing in this application. There are tangles of small wires from the terminals, I'm guessing they went to a computer that could tell the charger to adjust its behavior depending on the health of each module? It appears the business end of charger was connected to the pack mains at 330v and not to each module. I was able to find such high VDC chargers on ebay but I have some learning to do before I know how to proceed.
Thankful to have found this forum as information on this topic is scarce. Really excited to learn how to get this thing driving again.