The U.S. National Transportation Safety Board has called for new rules regarding shipping of prototype lithium ion batteries due to the risk of fire. That comes as U.S. imports of lithium ion batteries have surged, rising by 15.9% year over year in the 12 months to April 30. That’s come despite a drop in automotive batteries resulting from the ramp-up of Tesla’s production in the U.S. Shipments from Europe surged 235.9% higher and imports have remained robust despite COVID-19 disruptions recently. The increase in imports from Europe has been the result of a jump in shipmen...