Investment in new lithium supply is threatening to tip the global market for the battery metal into a deficit, beginning as early as this year. The warning comes from Canaccord, which noted that the supply of lithium has tightened considerably, even as demand for electric vehicles has weakened. What’s more, the deficit may last for quite a while, until 2035. Lithium is a rather abundant element, but deposits are concentrated in a handful of locations, commonly referred to as the Lithium Triangle locked between Argentina, Bolivia, and Chile.…