Data are optimized, independent values. Data extracted from hear say, manufacturers, and EE Times. Some of the data is from small cells like AA bateries. Data for EV batteries is used where available. Data is selected to reflect higher density battery implementations without going into astronomical cost premiums.
Data reflects the electric vehicle market.
NiMh batteries are in production for portable electronics but are in a prototype stage for electric vehicle size batteries. Cost in some cases may be off by a factor of 10 or more as labaratory or prototype batteries move into high volume production.