I'm planning to build myself an electric car. Due to the cost of Li-ion batteries, i would like to build myself a hi-density rechargeable, battery or fuel cell.
So far, i have read about carbon based battery, salt, direct methanol fuel cell etc... which one would you recommend ?
I just found this article from Design News about an improvement in Lead-Acid cells for a much higher power density (not energy density), and longer life, at lower cost:
There was also a recent article about Li-Ion cells used in...