Alan wrote:
In message , Tim Watts
wrote
I am a firm believer in nuclear power which tends to imply (mostly) that
electric cars are a good thing to be developing. As to whether battery
technology will get there (at least it is a well researched area
thanks to
the proliferation of portable electronics)

But has battery technology actually improved that much recently? In
portable electronic equipment it is the reduction in the silicon
geometry, requiring less power, that has improved battery charge life.
It is the improvements in the electronics technology and not the battery
technology.

A typical lithium battery is at least 50% of the theoretical energy
density. Its hard to see things improving much.