The third is nickle-cadmium batteries. Only recently have these become available to the hobbiest market, but a number of folks are using them. The tend to be considerably more expevsive than conventional batteries, but their extrodinarly long service life make them actually less expensive over the life of the vehicle. When they become available to the general public I will add them here, however, at the moment they are not available outside of test programs. Just follow this link to EV Parts Suppliers.
Batteries are usually available locally almost anywhere.
Yes, I have several favorites. Lots of technical information, including details on how all the components actually work. Wonderful and inspirational pictures, with great details on specific conversions and custom EVs, including solar cars, boats and even airplanes. A little bit dated, but an excellent history of electric vehicles up to 1980. Includes an interesting look at several older conversions.