Talk Morgan Forums Morgan Sports Cars Maintenance & Servicing Lightweight alternative to a battery

I came across the following interesting video: Capacitor to start engine. Perhaps it is most interesting for track use since it looses power relarively fast.
Harald

The real future for capacitors may be to store power for a "road KERS" system. They hold a lot of power and can release it fast, but leak power over time.

There is a certain functional equivalency between capacitors and batteries. Price and latency of charge determine which to use and that, almost always, dictates a battery. Weight is seldom an issue for automobiles.