Eight batteries in the back (trunk):
When I looked over the specs of such batteries, I also wanted to make a carton replica of a typical or mid class LiFePo battery and realized that the dimensions of such a battery where almost identical to those of a cereal box. For example, the Thunder Sky LFP160 AH model measures up almost exactly to a box of Bran cereal like the one in the first picture above.
I also went back to reading up on those much desirable LiFePo batteries which are selling for about $0.50 per Watt Hour in today's market. This is still a pretty penny especially if you are planning for a capacity of 15,000 watts or more. With the downturn in the economy and the increased competition in the Lithium battery market, one can only hope that prices come down considerably. The question is always when and how much. If the price were ever to come down to around $0.25 per Watt Hour, I would not hesitate to give these batteries a try.
I am now contemplating whether or not I should actually cut the trunk floor or keep it simple for now and hold off. I started making a 3-D drawing of my trunk/rear battery box using Google Sketchup and in a very short period of time, I managed to gain enough knowledge to make some decent drawings. I encourage anyone to play with this wonderful software tool. Here is a sample of one of my battery box drawings.
Happy New Year to all.