Lead extraction rate for the world and a Verhulst function fit to the data.
The red curve is the best fit to the data; it has an eventual extraction amount of 377x106 tonnes.
L. David Roper
http://arts.bev.net/RoperLDavid/
7 November 2007
Electric vehicles are making a comeback. The low-end electric vehicles use lead-acid batteries. The amount of energy that can be stored in lead-acid batteries is proportional to the amount of lead in the batteries. So, it is important to know about the availability of lead.
The graph below shows the lead extraction data for the world and a Verhulst function fit to the data in order to extrapolate into the future for an eventual extraction amount of 377x106 tonnes.
Lead extraction rate for the world and a Verhulst function fit to the data.
The red curve is the best fit to the data; it has an eventual extraction amount of 377x106 tonnes.
The price of lead has been rising very fast, especially for 2006-7:
There are two reasons for this fast price rise: