It's interesting that you mention Ever-ready / Energizer. I am wondering how they will fare when Li-Ion batteries proliferate beyond power tools and vehicles. Is there a chance that Li-Ion batteries would out perform the battery chemistries that Energizer and Duracell use? At least Li-Ion are rechargeable.You know what to bad GM couldn't get energizer to create a Lithium battery. I mention this because Nasa Has to Mars robots spirit and Opertunity that use energizer Batteries and there still going years past there life expecttancy.
Hmm Chevy Volt powered by the Bunny Keeps going and going
Or Chevy Volt with the Bunny inside