Too many eggs in the lithium basket

A plug-in Prius

I was at HybridFest this weekend where I spent a good chunk of time with a hybrid battery repair person (more on that later). Anyway, I brought up the idea of replacing my NiMH battery with a lithium pack in several years, and Ron, the battery man, asked, why?

Before I could reply, he mentioned numerous reasons why lithium would offer very little over a NiMH battery in a conventional hybrid - an argument I've heard before.

Finish: Too many eggs in the lithium basket