The power supplies are 48v and there are 3 of them. There is also a constant current supply that is used as well. I found the schematic on the 99mpg site, Here is the link:
http://99mpg.com/Data/Resources/down...dchargerv1.pdf
There is a ton of great info on all these sites. I learned quite a bit about the 2003-2005 Civic Hybrids searching around. I didn't use the 12v supply as the Civic uses a special fan. Was going to put a 110v baker fan somewhere but haven't found good spot. Usually only charge when is cold out. I did use an old hair drier with no heat and pulled the fan boot off the car. I'm not at my normal computer so not sure what other files I have. If you need other info you can PM me or post.
Glad I am able to help.