Monster Power. Energy technology: Lithium-ion batteries start to take on the
heavy-duty jobs previously handled by other types of battery.
http://www.economist.com/node/17647673?story_id=17647673
Quote:
"lithium is the lightest metal
"The positive electrodes are often made from lithium iron phosphate. Corvus,
however, uses lithium nickel manganese cobalt (NMC) because it provides a
greater energy density.
Note:
(a) Technology Overview, from Corvus Energy.
http://www.corvus-energy.com/technology.html
(b) The British English lorry (origin unknown) is "truck" in American
English.
(c) Townsend Kokam LLC makes batteries and is based in Kansas City, Missouri.