This is a spreadsheet I have compiled of assorted batteries suitable for EV use. It lists brand, model, voltage, capacity, density, and on some even cost and dimensions. Additions and changes are occasionally made. If you have any additions, suggestions, or questions, feel free to contact me. Also, If you would like a copy of the spreadsheet in Excel format, OpenOffice format, PDF, or almost any other format, send me an email and I will e-mail you the latest copy in the format of your choice.
The guy's website is at Green Indiana
The database is at Google Spreadsheets
Like I say I don't know about the accuracies but I thought it was worthwhile posting something here about this as there's so much talk about batteries and comparisons of data that goes on when 'EVers' meet up. I thought it is probably worthy of putting a link in to the forum. This chaps website seems to be well thought out and structured to me I think it worth a look.
The guy is American so obviously there's prices in US dollars and there may be a few other differences to what is available here but it must be worth a look.